Szanowni Panstwo,

	Jak ustalilismy na moim seminarium, przesylam kilka, wybranych, pozycji 
bibliograficznych o symetriach rownan rozniczkowych:

[1]	Bluman G. W., Kumei S., Symmetries and differential equations, 
	App. Math. Scien. vol. 81, 1989,
[2]	Olver P. J., Applications of Lie Groups to Differential Equations,
	Springer-Verlag, 1993,
[3]	Stephani H., Differential equations: their solutions using symmetries, 
	Cambridge, 1989,
[4]	Krasil'shchik I. S., Lychagin V.V. and Vinogradov A. M., 
	Geometry of Jet Spaces and Nonlinear Differential equations, 
	Adv. Stud. in Cont. Math 1, (1986).

							Szymon Gburek.