Some papers over last years
  1. M. Torrisi, A. Valenti, Group analysis and some solutions of a non linear wave equation, Atti Sem. Mat. Fis. Modena, 58, 445-458, 1990.
     
  2. V.C. Boffi, M. Torrisi, Methods of group analysis in the study of non linear dynamics of a gas mixture, Transport Theory Stat.Phys.,19, 2, (1990), 139-160.
     
  3. M. Torrisi, A. Valenti, On the supplementary conservation law for a hyperbolic model of heat conductor, Rend., Accad. Lincei, vol. I, fasc. 2, 171-176, 1990.
     
  4. D. Fusco, M. Torrisi, A. Valenti, Asymptotic wave analysis for combustion phenomena in Flame structure, Ed. O.P.Korobeinichev, vol 2, 442-445, Nauka Siberian Branch, Novosibirsk (U.S.S.R.), 1991.
     
  5. M. Torrisi, M.V. Lalicata, Some solutions for a hyperelastic half space with finite deformations, Int. Jour. of Nonlinear Mechanics 26, 1, 15-23, 1991.
     
  6. S. Lombardo, M. Torrisi, Similarity solutions of the Wood-Kirkwood model in detonation theory, Int. J. Engng. Sci, 29, 4, 523-532, 1991.
     
  7. M. Torrisi, R. Tracina', On the symmetric conservative form of a binary reacting mixture, ZAMP, 42, 100-108, 1991.
     
  8. R. E. Nettleton, M. Torrisi, Extended thermodynamics of heat flow coupled to a unimolecular reaction, Il Nuovo Cimento, 106B, 5, 525-535, 1991.
     
  9. M. Torrisi, Group methods for the study of detonation wave analysis, in Dynamic structure of detonation in gaseous and dispersed media, Ed. A.A. Borissov, 1143-156, Kluwer Academic Publisher, Dordrecht, 1991.
     
  10. M. Torrisi, A. Valenti, Wave features for a heat conductor with thermal relaxation, ZAMP, 43, 2, 357-366 1992.
     
  11. N.H. Ibragimov, M. Torrisi, A. Valenti, Preliminary group classification of equation $v_{tt}=f(x,v_x)v_{xx}+g(x,v_x)$, J. Math. Phys., 32 (1991), 11, 2988-2995.
  12. N. H. Ibragimov, M. Torrisi, A simple method for group analysis and its application to a model of detonation, J. Math. Phys., 33 (1992), 11, 3931-3937.
     
  13. M. Torrisi, R. Tracinà, A. Valenti, On equivalence transformations applied to a non-linear wave equation, Modern Group Analysis: Advanced Analytical and Computational Methods in Mathematical Physics, p.367, N. H. Ibragimov et al. eds. Kluwer Academic Publishers, 1993.
     
  14. S. Lombardo, M. Torrisi, On some special classes of similarity solutions of the Wood-Kirkwood model in detonation theory, Int. Jour. of Eng. Sciences, 32, 4, 669-680, 1994.
     
  15. M.V. Lalicata, M. Torrisi, Group analysis approach for a binary reacting mixture, Int. Jour. of Non-Linear Mechanics, 29, 3, 279-288, 1994.
     
  16. N.H. Ibragimov, M. Torrisi, Equivalence groups for balance equations, J. of Mathematical Analysis and Applications, 184, 3, 441-452, 1994.
     
  17. M.A. Rigano, M. Torrisi, Lie symmetries of a simplified model for reacting mixtures, Int. J. Engng Sci, 33, 2, 293-302, 1995.
     
  18. M. Torrisi, R. Tracinà, A. Valenti, Group analysis approach for a non linear differential system arising in diffusion phenomena, J. Math. Physics, 37, 9, 1996.
     
  19. M. Torrisi, R. Tracinà, Equivalence transformations for system of first order quasilinear partial differential equations, in Modern Group Analysis VI: Developments in Theory, Computation and Applications, Proceedings of the International Conference in the New South Africa, Johannesburg, South Africa,15-20 January 1996, Edited by N.H. Ibragimov and F.M. Mahomed, New Age International (P) Ltd, New Delhi, 115-135.
     
  20. A. Valenti, M. Torrisi, G. Lebon, Heat pulse propagation by second sound in dielectric crystals, J. Phys.: Condens. Matter, 9, 1997, 3117-3127.
     
  21. M. Torrisi, R. Tracinà, Equivalence transformations and symmetries for heat conduction model, Int. J. Non-Linear Mechanics, 33, 3, 1998, 473-487.
     
  22. M. Senthilvelan, M. Torrisi, Equivalence transformations and approximate solutions of a nonlinear heat conduction model, J. Phys. A: Math. Gen. 31 (1998)  10005-10016.
     
  23. V. Romano, M. Torrisi, Application of Weak Equivalence Transformations to a Group Analysis of a Drift-Difffusion Model, J. Phys. A: Math. Gen. 32 (1999), 7953-7963.
     
  24. M. Senthilvelan, M. Torrisi, Potential Symmetries and New Solutions of a Simplified Model for Reacting Mixtures, J. Phys. A: Math. Gen. 33 (2000), 405-415.
     
  25. V. Romano, M. Torrisi, Asymptotic Waves in the Hydrodynamical Model of Semiconductors Based on Extended Thermodynamics, ZAMM Z. Angew. Math. Mech. 81 (2001), no. 1, 53-63.
     
  26. A.Valenti , M. Torrisi , G. Lebon Shock waves in crystalline dielectrics at low temperature J Phys Condens. Mat, (2002), 14 , 3553-3564.
     
  27. M. Senthilvelan, M. Torrisi, On certain new solutions of a simplified model for reacting mixtures, Nonlinear Dynam. 30 (2002), no. 3, 277-286.
     
  28. M. Senthilvelan, M. Torrisi, Linearization and solutions of a simplified model for reacting mixtures, "WASCOM 2001"--11th Conference on Waves and Stability in Continuous Media (Porto Ercole), 539-547, World Sci. Publishing, River Edge, NJ, 2002.
     
  29. M. Maugeri, A. Ragusa, M. Torrisi, Underground Pollution: Some Solutions of the Transport Equation, Math. Comput. Modelling , 37 (2003), no. 5-6, 583-587.
     
  30. N.H. Ibragimov, M. Torrisi, A. Valenti, Differential invariants of nonlinear equations $v_{tt}=f(x,v_x)v_{xx}+g(x,v_x)$, Communications in Nonlinear Science and Numerical Simulation 9, 1, (2004), 69-80 .
     
  31. N.H. Ibragimov, M. Torrisi, A. Valenti, Addendum to the paper: Differential invariants of nonlinear equations $v_{tt}=f(x,v_x)v_{xx}+g(x,v_x)$, Communications in Nonlinear Science and Numerical Simulation 9, 1, (2004), 81.
     
  32. Gandarias, M. L, Torrisi, M., Valenti, A., Symmetry classification and optimal systems of a non-linear wave equation, Int. Journal of Non-Linear Mechanics 39, 3, (2004), 389-398.
     
  33. M. Torrisi, R. Tracinà and A. Valenti, On the linearization of semilinear wave equations, Nonlinear Dynamics 36, (2004), no. 1,97-106.
     
  34. M. Torrisi, R. Tracinà and A. Valenti, A new class of linearizable wave equations "WASCOM 2003"--12th Conference on Waves and Stability in Continuous Media (Villasimius), 541-546, World Sci. Publishing, Singapore, (2004).
     
  35. V. Romano, J. M. Sellier, M. Torrisi, Symmetry analysis and exact invariant solutions for the drift-diffusion model of semiconductors, Physica A: Statistical Mechanics and its Applications, 341, 62-72 (2004).
     
  36. M. Torrisi, R. Tracinà, On the differential invariants of a family of diffusion equations, arXvi:nlin.SI/0402021, 2004