TY  - BOOK
AU  - Bluman, George W.
AU  - Kumei, Sukleyuki.
TI  - Symmetries and differential equations
T2  - Applied mathematical sciences, Vol.81
SN  - 0387969969
U1  - 515.35 
PY  - 1989///
CY  - New York
PB  - Springer-Verlag
ER  -