Group-Theoretical Methods for Integration of Nonlinear Dynamical Systems Progress in Mathematical Physics, nr. 15 Autor Andrei N. Leznov et al. 22 apr 1992 Hardback Preț: 396.62 lei 6-8 săpt.
Lie Algebras, Geometry, and Toda-Type Systems Cambridge Lecture Notes in Physics, nr. 8 Autor Alexander V. Razumov et al. 14 mai 1997 Paperback Preț: 373.56 lei 6-8 săpt.