01418nam a2200361 i 450099100128364970753620020507113838.0970308s1988 ||| ||| | eng 9971506637b10199020-39ule_instLE00645188ExLDip.to Fisicaita53(082.2)53.1.34510.35530.1'5QC20.7.N6I54Conference on symmetries and nonlinear phenomena464190Symmetries and nonlinear phenomena :proceedings of the International School on Applied Mathematics, Paipa, Colombia, February 22-26, 1988 /D. Levi, P. Winternitz (eds.)Singapore :World Scientific,c1988xi, 458 p. :ill. ;23 cm.CIF Series ;9Includes bibliographical references and index.Group theoryCongressesLevi, Decioauthorhttp://id.loc.gov/vocabulary/relators/aut463186Winternitz, PavelInternational School on Applied Mathematics.b1019902017-02-1727-06-02991001283649707536LE006 53.1.3 LEV12006000040938le006-E0.00-l- 00000.i1024576527-06-02Symmetries and nonlinear phenomena1445109UNISALENTOle00601-01-97ma -engxx 01