Bluman, George W., 1943- Symmetries and differential equations / George W. Bluman, Sukeyuki Kumei. - New York : Springer-Verlag, c1989. - xiii, 412 p. - Applied mathematical sciences ; v. 81 . - Applied mathematical sciences (Springer-Verlag New York Inc.) ; v. 81. . ISBN: 0387969969 LCCN: 90042184 Subjects--Uniform Titles: Lie groups. Subjects--Topical Terms: Differential equations--Numerical solutions.Differential equations, Partial--Numerical solutions.