TY  - BOOK
AU  - Ovsiannikov, L. V.
AU  - Ames, W. F. ; ed.
TI  - Group analysis of differential equations
U1  - 515.35 
PY  - 1982///
CY  - New York
PB  - Academic Press
N1  - "Translation from the Russian ed. by W. F. Ames"
ER  -