Scientific papers

  1. N. Cufaro Petroni and P. Sabino:
    Fast simulation of tempered stable Ornstein-Uhlenbeck processes
    Comput. Stat.  (2022)
    doi.org/10.1007/s00180-022-01205-8

  2. N. Cufaro Petroni and P. Sabino:
    Fast Pricing of Energy Derivatives with Mean-reverting Jump Processes
    App. Math. Fin.  (2021)
    doi.org/10.1080/1350486X.2021.1909488

  3. N. Cufaro Petroni:
    The falling pencil: A Divertimento in four movements
    research paper (2021)
    arXiv:2101.05632 [physics.class-ph]

  4. N. Cufaro Petroni and P. Sabino:
    Tempered stable distributions and finite variation Ornstein-Uhlenbeck processes
    research paper (2020)
    arXiv:2011.09147 [math.PR]

  5. N. Cufaro Petroni, S. De Martino and S. De Siena:
    Logistic and logistic models in population dynamics: General analysis and exact results
    J. Phys. A: Math. Theor. (2020)  53 445005, doi: 10.1088/1751-8121/abb277 
    arXiv:2004.10478 [q-bio.PE]

  6. N. Cufaro Petroni:
    Probability and Stochastic Processes for Physicists
    Springer Nature (2020), pages XIII, 373
    https://www.springer.com/in/book/9783030484071

  7. N. Cufaro Petroni and P. Sabino:
    Gamma related Ornstein-Uhlenbeck processes and their simulation
    J. Stat. Comp. Sim. (2020) doi: 10.1080/00949655.2020.1842408
    arXiv:2003.08810 [math.PR]

  8. N. Cufaro Petroni, S. De Martino and S. De Siena:
    Gompertz and logistic stochastic dynamics: Advances in an ongoing quest
    research paper (2020)
    arXiv:2002.06409 [math.PR]

  9. N. Cufaro Petroni:
    Taking rational numbers at random
    research paper (2019)
    arXiv:1908.06944 [math.PR]

  10. N. Cufaro Petroni:
    Thou shalt not say "at random" in vain: Bertrand's paradox exposed
    research paper (2018)
    arXiv:1810.07805 [math.HO]

  11. N. Cufaro Petroni and P. Sabino:
    Pricing exchange options with correlated jump-diffusion processes
    Quant. Fin. (2018)  
    doi: 10.1080/14697688.2017.1423371
  12. N. Cufaro Petroni and P. Sabino:
    Coupling Poisson processes by self-decomposability
    Mediterr. J. Math. (2017) 14:69
    13. doi: 10.1007/s00009-017-0847-4
    1660-5446/17/020001-25

  13. N. Cufaro Petroni and P. Sabino:
    Cointegrating jumps: an application to energy facilities
    research paper (2015)
    arXiv:1509.01144 [q-fin.PR]

  14. N. Cufaro Petroni and P. Sabino:
    Correlated Poisson processes and self-decomposable laws
    research paper (2015)
    arXiv:1509.00629 [math.PR]

  15. N. Cufaro Petroni:
    Entropy and its Discontents: A Note on Definitions
    Entropy 16 (2014) 4044   (IF 2013 = 1.564)
    doi: 10.3390/e16074044
    arXiv:1405.7601 [cs.IT]

  16. N. Cufaro Petroni and P. Sabino:
    Pricing and hedging Asian Basket Options with Quasi-Monte Carlo simulations
    Meth. Comp. Appl. Prob. 15 (2013) 147   (IF 2013 = 0.778)
    doi: 10.1007/s11009-011-9228-9
    arXiv:0907.3092v1 [q-fin.PR]

  17. N. Cufaro Petroni and P. Sabino:
    Multidimensional Quasi-Montecarlo Malliavin Greeks
    Decisions Econ Finan 36 (2013) 199   (SNIP 2013 = 0.627)
    doi: 10.1007/s10203-011-0125-z
    arXiv:1103.5722 [q-fin.CP]

  18. N. Cufaro Petroni and M. Pusterla:
    Phenomenology from relativistic Lévy-Schrödinger equations: possible: Application to neutrinos
    research paper (2013)
    arXiv:1209.6259v2 [hep-ph]

  19. N. Cufaro Petroni and M. Pusterla:
    Mass spectrum from stochastic Lévy-Schrödinger relativistic equations: possible  qualitative predictions in QCD
    Mod. Phys. Lett. A 27 (2012) 1250034   (IF 2013 = 1.338)
    doi: 10.1142/S0217732312500344
    arXiv:1111.2956v1 [quant-ph]

  20. A. Andrisani and N. Cufaro Petroni:
    Markov processes and generalized Schrödinger equations
    J. Math. Phys. 52 (2011) 113509   (IF 2013 = 1.176)
    doi: 10.1063/1.3663205
    arXiv:1107:1337 [mathPR]

  21. N. Cufaro Petroni:
    Lévy-Schrödinger wave packets
    J. Phys. A: Math. Theor. 44 (2011) 165305   (IF 2013 = 1.687)
    doi: 10.1088/1751-8113/44/16/165305
    arXiv:1006.1833v2 [math.PR]

  22. N. Cufaro Petroni and M. Pusterla:
    Mass spectrum and Lévy-Schrödinger relativistic equation
    research paper (2011)
    arXiv:1008.4255v3 [quant-ph]

  23. N. Cufaro Petroni and M. Pusterla:
    Lévy processes and Schrödinger equation
    Physica A 388 (2009) 824   (IF 2013 = 1.722)
    doi: 10.1016/j.physa.2008.11.035 
    arXiv:0805.0503v2 [cond-mat.stat-mech]

  24. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    Stationary distributions of non Gaussian Ornstein-Uhlenbeck processes for beam halos
    Proceedings of the conference CYCLOTRONS 07 (Giardini Naxos, Italy, 1-5 October 2007);
    INFN Catania (2008) p. 424

  25. N. Cufaro Petroni:
    Selfdecomposability and selfsimilarity: a concise primer 
    Physica A 387 (2008) 1875   (IF 2013 = 1.722)
    doi: 10.1016/j.physa.2007.11.036
    arXiv:0708.1239 [cond-mat.stat-mech]

  26. N. Cufaro Petroni:
    Mixtures in non stable Lévy processes 
    J. Phys. A 40 (2007) 2227   (IF 2013 = 1.687)
    doi: 10.1088/1751-8113/40/10/001
    arXiv:math/0702058v1 [math.PR]

  27. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    Lévy-Student processes for a stochastic model of beam halos
    Nucl. Instr. Meth. A 561 (2006) 23   (IF 2013 = 1.316)
    doi: 10.1016/j.nima.2006.01.011

  28. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    Lévy-Student distributions for halos in accelerator beams 
    Phys. Rev. E  72 (2005) 066502   (IF 2013 = 2.326)
    doi: 10.1103/PhysRevE.72.066502

  29. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    Dynamical control of the halo in particle beams: a stochastic hydrodynamic approach 
    Int. J. Mod. Phys. B 18 (2004) 607   (IF 2013 = 0.455)
    doi: 10.1142/S0217979204024227

  30. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    Non Gaussian transverse distributions in a stochastic model for beam halos
    Proceedings of the conference EPAC04 (Lucerne, CH, July 2004);
    EPS-AG/CERN (2004) p. 2056

  31. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    The halo formation in charged particle beams: a stochastic hydrodynamic approach
    Proceedings of the conference Quantum Aspects of Beam Physics (Hiroshima, Japan, January 2003);
    Pisin Chen Ed., World Scientific (2004) p. 36
    doi: 10.1142/9789812702333_0004

  32. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    Stochastic-hydrodynamic model of halo formation in charged particle beams 
    Phys. Rev. S.T.-A.B.  6 (2003) 034206   (IF 2013 = 1.517)
    doi: 10.1103/PhysRevSTAB.6.034206

  33. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    Controlled Stochastic collective dynamics of particle beams
    Proceedings of the conference Quantum Aspects of Beam Physics 2K (Capri, Italy, October 2000);
    Pisin Chen Ed., World Scientific (2002) p. 507
    doi: 10.1142/9789812777447_0041

  34. N. Cufaro Petroni and J.-P. Vigier:
    Remarks on observed superluminal light propagation
    Found. Phys. Lett. 14 (2001) 395   (IF 2006 = 0.629)
    doi: 10.1023/A:1012321402475

  35. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    Stochastic collective dynamics of charged-particle beams in the stability regime
    Phys. Rev. E 63 (2001) 016501   (IF 2013 = 2.326)
    doi: 10.1103/PhysRevE.63.016501

  36. N. Cufaro Petroni and L. Morato:
    Entangled states in stochastic mechanics
    J. Phys. A 33 (2000) 5833   (IF 2013 = 1.687)
    doi: 10.1088/0305-4470/33/33/304

  37. N. Cufaro Petroni et al. (21 signatures):
    The EXPLODET project: advanced nuclear techniques for humanitarian demining
    Nucl. Instr. and Meth. A 422 (1999) 918   (IF 2013 = 1.316)
    doi: 10.1016/S0168-9002(98)01046-8

  38. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    Controlled quantum evolutions and transitions
    J. Phys. A 32 (1999) 7489   (IF 2013 = 1.687)
    doi: 10.1088/0305-4470/32/43/305

  39. N. Cufaro Petroni and M. Nitti:
    Regression functions by neurocomputing
    research paper, Bari University (1999    )

  40. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    A stochastic model for the semiclassical collective dynamics of charged beams in particle accelerators
    Proceedings of the conference Quantum Aspects of Beam Physics (Monterey, USA, January 4-9, 1998);
    Pisin Chen Ed., World Scientific (1999) p. 710
    ISBN: 9810235518

  41. N. Cufaro Petroni et al. (23 signatures):
    Advanced nuclear techniques for humanitarian demining
    IEE CONFERENCE PUBLICATION, vol. 458 (1998) p. 157-159
    ISSN: 0537-9989
    doi: 10.1049/cp:19980710

  42. N. Cufaro Petroni, S. De Martino and S. De Siena:
    Exact solutions of Fokker-Planck equations associated to quantum wave functions
    Phys. Lett. A 245 (1998) 1   (IF 2013 = 1.626)
    doi: 10.1016/S0375-9601(98)00430-7

  43. N. Cufaro Petroni, S. De Martino, S. De Siena and F. Illuminati:
    Controlled quantum evolutions and stochastic mechanics
    Contribution to the conference on Mathematical and conceptual foundations of modern physics,
    Nottingham (UK) September 7-11, 1998
    arXiv:quant-ph/9901054

  44. N. Cufaro Petroni:
    Identification of acoustic signals by artificial neural networks
    in Mathematical theory of networks and systems (MTNS-98),
    A.Beghi et al Eds., Il Poligrafo (1998) p. 925
    ISBN: 88-7115-117-8

  45. N. Cufaro Petroni, S. De Martino, S. De Siena, F. Illuminati, R. Fedele and S. Tzenov:
    Stochastic control of beam dynamics
    Proceedings of the conference EPAC98 (Stockholm , June 22-26, 1998),
    S.Myers et al. Eds., IoP Publ. (1998) p. 1259
    ISBN: 0750305797

  46. N. Cufaro Petroni, S. De Martino and S. De Siena:
    Non-equilibrium densities of Nelson processes
    in New perspectives in the physics of mesoscopic systems,
    S. De Martino et al. Eds., World Scientific (1997) p.59
    ISBN: 9810232365

  47. N. Cufaro Petroni and M. Tricarico:
    Self-organizing Neural Nets and the Perceptual Origin of the Circle of Fifths
    in Music, Gestalt and computing,
    M. Leman Ed., Springer (1997), p.169
    ISBN: 3540635262, ISSN: 0302-9743

  48. N. Cufaro Petroni:
    Relaxation of Nelson processes toward quantum states
    Communication to the 4th World Congress of the Bernoulli Society
    Wien (August 1996), p. 162

  49. N. Cufaro Petroni:
    Lezioni di Calcolo delle Probabilità
    Edizioni dal Sud, Bari (1996), 405 pages

  50. N. Cufaro Petroni:
    Asymptotic behaviour of densities for Nelson processes
    in Quantum communications and measurement
    V.P.Belavkin et al. Eds., Plenum Press (1995), p. 43
    ISBN: 0-306-45128-X

  51. N. Cufaro Petroni, M. Guarino and G. Pasquariello:
    Neural networks and pitch detection in random acoustic signals
    Proceedings of the International Conference on Acoustics and Musical Research (CIARM'95),
    F.Pedrielli ed. Ferrara (May 1995), p.119

  52. N. Cufaro Petroni, M. Guarino and G. Pasquariello:
    Neural networks and pitch detection in random acoustic signals
    Proceedings of the conference on Engeneering Applications of Artificial Neural Networks (EANN'95),
    A.B.Bulsari et al. eds. Helsinki-Otaniemi (August 1995), p. 389

  53. N. Cufaro Petroni end F. Guerra:
    Quantum mechanical states as attractors for Nelson processes
    Found. Phys. 25 (1995) 297   (IF 2013 = 1.144)
    doi: 10.1007/BF02055209

  54. N. Cufaro Petroni:
    On the series of Fermi random variables
    Memorie di Matematica e Applicazioni,
    Rendiconti dell'Accademia Nazionale delle Scienze detta dei XL, 113° (1995) XIX p. 273

  55. N. Cufaro Petroni, F. Degrassi and G. Pasquariello:
    Detection of pitch in random acoustic signals by neural networks
    J. New Mus. Res. 23 (1994) 369    (IF 2013 = 0.519)
    doi: 10.1080/09298219408570665

  56. N. Cufaro Petroni, F. Degrassi and G. Pasquariello:
    Detection of pitch and residue pitch in random acoustic signals
    Proceedings of the Frist International Conference on Cognitive Musicology
    J. Laaksamo, J. Louhivuori eds. University of Jyväskylä (August 1993), p. 20

  57. N. Cufaro Petroni:
    On the Structure of the Quantum Mechanical Probability Models
    Found. Phys. 22 (1992) 1379 (IF 2013 = 1.144)
    doi: 10.1007/BF0188366

  58. N. Cufaro Petroni and J. P. Vigier:
    Single particle trajectories and interferences in Quantum Mechanics
    Found. Phys. 22 (1992) 1 (IF 2013 = 1.144)
    doi: 10.1007/BF01883379

  59. N. Cufaro Petroni:
    Conditioning in Quantum Mechanics
    Phys. Lett. A 160 (1991) 107 (IF 2013 = 1.626)
    doi: 10.1016/0375-9601(91)90597-2

  60. N. Cufaro Petroni:
    Stochastic mechanics and quantum interference
    Phys. Lett. A 141 (1989) 370 (IF 2013 = 1.626)
     doi: 10.1016/0375-9601(89)90851-7

  61. N. Cufaro Petroni:
    Quantum mechanics, classical analogs and causal anomalies
    in Problems in quantum physics L. Kostro, A. Posiewnik, J. Pykacz and M. Zukowsky eds. (World Scientific, Singapore, 1988), p. 43
    ISBN: 9971-50-449-9

  62. N. Cufaro Petroni:
    Perspectives of physical determinism
    in The nature of quantum paradoxes G. Tarozzi and A. van der Merwe eds. (Kluwer, Dordrecht, 1988), p.197
    ISBN: 9027727031

  63. N. Cufaro Petroni, Ph. Gueret and J. P. Vigier:
    Second-order wave equations for spin-½ fields: 8-spinors and canonical formulation
    Found. Phys. 18 (1988) 1057  (IF 2013 = 1.144)
    doi: 10.1007/BF01892948

  64. N. Cufaro Petroni:
    Toward a causal interpretation of the relativistic quantum mechanics of a spinning particle
    in Quantum uncertainties
    W. M. Honig, D. W. Kraft and E. Panarella eds. (Plenum, New York, 1987) p. 99
    ISBN: 0306426706, ISSN: 0258-1221

  65. N.Cufaro Petroni:
    Classical analogs for quantum systems
    Phys. Lett. A 124 (1987) 475 (IF 2013 = 1.626)
    doi: 10.1016/0375-9601(87)90047-8

  66. N. Cufaro Petroni, C. Dewdney, P. Holland, A. Kyprianidis and J. P. Vigier:
    Einstein-Podolsky-Rosen constraints on quantum action-at-a-distance: the Sutherland paradox
    Found. Phys. 17 (1987) 759 (IF 2013 = 1.144)
    doi: 10.1007/BF00733265

  67. N. Cufaro Petroni:
    Non-positive conserved densities in relativistic quantum mechanics
    in W. Mückenheim: A review of extended probabilities
    Phys. Rep. 133 (1986) 337 (IF 2013 = 22.929)
    doi: 10.1016/0370-1573(86)90110-9

  68. N. Cufaro Petroni, Ph. Gueret, A. Kyprianidis and J. P. Vigier:
    Second-order wave equation for spin-½ fields – II . The Hilbert space of the states
    Phys. Rev. D 33 (1986) 1674 (IF 2013 = 4.691)
     doi: 10.1103/PhysRevD.33.1674

  69. N. Cufaro Petroni:
    A causal fluidodynamical model for the relativistic quantum mechanics
    in Open questions in quantum physics
    G. Tarozzi and A. van der Merwe eds. (Reidel, Dordrecht, 1985), p. 199
     ISBN: 90-277-1853-9

  70. N. Cufaro Petroni, C. Dewdnwy, P. Holland, A. Kyprianidis and J. P. Vigier:
    Realistic physical origin of the quantum observable operator algebra in the frame of the causal stochastic interpretation of quantum mechanics: the relativistic spin-0 case
    Phys. Rev. D 32 (1985) 1375 (IF 2013 = 4.691)
     doi: 10.1103/PhysRevD.32.1375

  71. N. Cufaro Petroni, Ph. Gueret, A. Kyprianidis and J. P. Vigier:
    Second-order wave equation for spin-½ fields
    Phys. Rev. D 31 (1985) 3157 (IF 2013 = 4.691)
    doi: 10.1103/PhysRevD.31.3157

  72. N. Cufaro Petroni, C. Dewdney, P. Holland, A. Kyprianidis and J. P. Vigier:
    Causal space-time paths of individual distinguishable particle motions in N-body quantum systems: elimination of negative probabilities
    Lett. N. Cim. 42 (1985) 285
     doi: 10.1007/BF02722454

  73. N. Cufaro Petroni, Ph. Gueret, A. Kyprianidis and J. P. Vigier:
    An alternative derivation of the spin-dependent quantum potential
    Lett. N. Cim. 42 (1985) 362
    doi: 10.1007/BF02747053

  74. N. Cufaro Petroni and J. P. Vigier:
    Dirac's aether in relativistic quantum mechanics
    in Quantum, space and time – the quest continues
    A. Barut, A. van der Merwe and J. P. Vigier eds. (Cambridge University Press, Cambridge, 1984), p. 505
     ISBN: 0521319110

  75. N. Cufaro Petroni, C. Dewdney, P. Holland, T. Kyprianidis and J. P. Vigier:
    Elimination of negative probabilities within the causal stochastic interpretation of quantum mechanics
    Phys. Lett. A 106 (1984) 368 (IF 2013 = 1.626)
    doi: 10.1016/0375-9601(84)90918-6

  76. N. Cufaro Petroni, Ph. Gueret and J. P. Vigier:
    Form of a spin-dependent quantum potential
    Phys. Rev. D 30 (1984) 495 (IF 2013 = 4.691)
    doi: 10.1103/PhysRevD.30.495

  77. N. Cufaro Petroni, Ph. Gueret and J. P. Vigier:
    A causal stochastic theory of spin-½ fields
    N. Cim. B 81 (1984) 243
     doi: 10.1007/BF02721613

  78. N. Cufaro Petroni, A. Kyprianidis, Z. Marić, D. Sardelis and J. P. Vigier:
    Causal stochastic interpretation of Fermi-Dirac statistics in terms of distinguishable non-locally correlated particles
    Phys. Lett. A 101 (1984) 4 (IF 2013 = 1.626)
    doi: 10.1016/0375-9601(84)90078-1

  79. N. Cufaro Petroni and J. P. Vigier:
    Random motions at the velocity of light and relativistic quantum mechanics
    J. Phys. A 17 (1984) 599 (IF 2013 = 1.766)
    doi: 10.1088/0305-4470/17/3/021

  80. N. Cufaro Petroni and J. P. Vigier:
    Stochastic interpretation of relativistic quantum equations
     in Old and new questions in physics, cosmology philosophy and theoretical biology
    A.van der Merwe ed. (Plenum, New York, 1983), p. 325
     ISBN 0-306-40962-3

  81. N. Cufaro Petroni and J. P. Vigier:
    Causal action-at-a-distance interpretation of the Aspect-Rapisarda experiments
    Phys. Lett. A 93 (1983) 383 (IF 2013 = 1.626)
    doi: 10.1016/0375-9601(83)90465-6

  82. N. Cufaro Petroni and J. P. Vigier:
    Dirac's aether in relativistic quantum mechanics
    Found. Phys. 13 (1983) 253 (IF 2013 = 1.144)
    doi: 10.1007/BF01889484

  83. N. Cufaro Petroni and J. P. Vigier:
    Stochastic model for the motion of correlated photon pairs
    Phys. Lett. A 88 (1982) 272 (IF 2013 = 1.626)
     doi: 10.1016/0375-9601(82)90066-4

  84. N. Cufaro Petroni, Ph. Droz-Vincent and J. P. Vigier:
    Action-at-a-distance and causality in the stochastic interpretation of quantum mechanics
    Lett. N. Cim. 31 (1981) 415
    doi: 10.1007/BF02776147

  85. N. Cufaro Petroni and J. P. Vigier:
    Stochastic derivation of the Dirac equation in terms of a fluid of spinning tops endowed with random fluctuations at the velocity of light
    Phys. Lett. A 81 (1981) 12 (IF 2013 = 1.626)
     doi: 10.1016/0375-9601(81)90290-5

  86. N. Cufaro Petroni, Z. Marić, Dj. Živanović and J. P. Vigier:
    Stable states of a relativistic bilocal stochastic oscillator: a new quark-lepton model
    J. Phys. A 14 (1981) 501 (IF 2013 = 1.766)
    doi: 10.1088/0305-4470/14/2/025

  87. N. Cufaro Petroni, Z. Marić, Dj. Živanović and J. P. Vigier:
    Baryon octet magnetic moments in an integer-charged-quark oscillator model
    Lett. N. Cim. 29 (1980) 565
    doi: 10.1007/BF02743211

  88. N. Cufaro Petroni, A. Garuccio, F. Selleri and J. P. Vigier:
    Sur la contradiction entre la théorie quantique classique (idéalisée) de la mesure et la conservation du carré du moment angulaire total dans le paradoxe de Einstein, Podolski et Rosen
    C. R. Acad. Sci. Paris 290 (1980) 111

  89. N. Cufaro Petroni and J. P. Vigier:
    Causal superluminal interpretation of the Einstein-Podolsky-Rosen paradox
    Lett. N. Cim. 26 (1979) 149
    doi: 10.1007/BF02746601

  90. N. Cufaro Petroni and J. P. Vigier:
    Markov process at the velocity of light: the Klein-Gordon statistic
    Int. J. Th. Phys. 18 (1979) 807  (IF 2013 = 1.086)
    doi: 10.1007/BF006704590

  91. N. Cufaro Petroni and J. P. Vigier:
    Stochastic derivation of Proca's equation in terms of a fluid of Weyssenhoff tops endowed with random fluctuations at the velocity of light
    Phys. Lett. A 73 (1979) 289 (IF 2013 = 1.626)
    doi: 10.1016/0375-9601(79)90536-X

  92. N. Cufaro Petroni and J. P. Vigier:
    On two conflicting physical interpretations of the breaking of restricted relativistic einsteinian causality by quantum mechanics
    Lett. N. Cim. 25 (1979) 151
    doi: 10.1007/BF02782799

  93. N. Cufaro Petroni:
    On the observable differences between proper and improper mixtures - II
    N. Cim. B 40 (1977) 381
    doi: 10.1007/BF02728221

  94. N. Cufaro Petroni:
    On the observable differences between proper and improper mixtures - I
    N. Cim. B 40 (1977) 235
    doi: 10.1007/BF02739195