Colombia) International School on Applied Mathematics (1988 Paipa

title	ISBN-13 (ISBN-10)	year of publica- tion	other author(s)
Symmetries and Nonlinear Phenomena: Proceedings of the International School on Applied Mathematics	978-9971-5-O663-6 (9971-5-O663-7)	1989	D. Levi · Pavel Winternitz