TY - BOOK AU - Krasil'shchik, I S. AU - Kersten, P H M. TI - Symmetries and Recursion Operators for Classical and Supersymmetric Differential Equations SN - 0 7923 6315 9 CY - Netherlands KW - Symmetries KW - Recursion Operators KW - Supersymmetric Differential Equations ER -