|
[41] [together with A.S. Fokas]: The Hierarchy of the Benjamin-Ono Equation, Physics Letters 86A, 341- 345 (1981) |
|
[42] [together with W. Oevel]: The bi-Hamiltonian Structure of some Nonlinear fifth- and seventh- order Differential Equations and Recursion Formulas for their Symmetries and conserved Covariants, J.Math.Phys. 23, 358-363 (1982) |
|
[43] [together with W. Oevel]: Explicit Formulas for symmetries and Conservation laws of the Kadomtsev - Petviashvili equation, Physics Letters, 88, 323-327 (1982) |
|
[44] The Lie Algebra Structure of Degenerate Hamiltonian and Bi-Hamiltonian
Systems, Progress of Theoretical Physics 68, 1082-1104 (1982)
|
|
[45] Mastersymmetries: Higher order Time-Dependent symmetries and conserved
Densities of Nonlinear Evolution Equations, Progr. of Theoretical
Physics 70,1508-1522 (1983)
|
|
[46] Soliton-Gleichungen, Jahrbuch Überblicke Mathematik 1984, p.9-36, Bib-
liographisches Institut, Mannheim (1984)
|
|
[47] Algebraic Foundation of some distribution algebras, Studia Mathematica
76, 439-453 (1984)
|
|
[48] Distribution Algebras and Elementary shock wave analysis, in: Advances
in Computer Methods for partial differential equations, 469-475, IMACS
1984 (R. Vichnevetsky, R.S. Stepleman Editors)
|
|
[49] On the Hierarchy of the Landau-Lifshitz equation, Physica 13 D, 387-394
(1984)
|
|
[50] Mastersymmetries for Completely integrable Systems in Statistical Mechanics,
Proceeding of the Sitges Conference 1984, Springer Lecture Notes
in Physics 216 (L. Garrido ed.) p.305-315, Berlin - Heidelberg - New York
1985
|