TY  - GEN
AU  - Bluman,George W.
AU  - Kumei,S.
AU  - Bluman,G.W.
TI  - Symmetries and differential equations
T2  - Applied mathematical sciences
SN  - 0387969969
U1  - 515.35 
PY  - 1989///
CY  - [S.l.]
PB  - Springer
ER  -