Kersten, Paul H. M. The general symmetry algebra structure of the underdetermined equation \(u_ x=(v_{xx})^ 2\). (English) Zbl 0738.34007 J. Math. Phys. 32, No. 8, 2043-2050 (1991). MSC: 34A25 58J70 35A30 17B66 PDF BibTeX XML Cite \textit{P. H. M. Kersten}, J. Math. Phys. 32, No. 8, 2043--2050 (1991; Zbl 0738.34007) Full Text: DOI OpenURL
Fradkin, E. S.; Linetskij, V. Ya. Infinite-dimensional generalizations of finite-dimensional symmetries. (English) Zbl 0745.17012 J. Math. Phys. 32, No. 5, 1218-1226 (1991). Reviewer: A.A.Bogush (Minsk) MSC: 17B65 17B68 22E65 81T40 17B35 17B81 PDF BibTeX XML Cite \textit{E. S. Fradkin} and \textit{V. Ya. Linetskij}, J. Math. Phys. 32, No. 5, 1218--1226 (1991; Zbl 0745.17012) Full Text: DOI OpenURL
Onishchik, A. L.; Vinberg, È. B. Foundations of Lie theory. (English. Russian original) Zbl 0781.22003 Lie groups and Lie algebras I. Foundations of Lie theory. Lie transformation groups. Encycl. Math. Sci. 20, 1-94 (1993); translation from Itogi Nauki Tekh., Ser. Sovrem. Probl. Mat., Fundam. Napravleniya 20, 5-101 (1988). MSC: 22Exx 17B35 22E65 22-02 17B45 17B67 PDF BibTeX XML Cite \textit{A. L. Onishchik} and \textit{È. B. Vinberg}, Encycl. Math. Sci. 20, 1 (1988; Zbl 0781.22003); translation from Itogi Nauki Tekh., Ser. Sovrem. Probl. Mat., Fundam. Napravleniya 20, 5--101 (1988) OpenURL