Symmetry and integration methods for differential equations
New York
Springer
2002
x, 419 p.: ill.; 25 cm
Applied mathematical sciences
v.154
"This book is a significant update of the first four chapters of Symmetries and differential equations, Springer 1989 )reprinted with c orrections 1996(, by George W. Bluman and Sukeyuki Kumei"--Pref