TY  - BOOK
AU  - Ovsiannikov, L. V.
AU  - Ames, W. F.
TI  - GROUP ANALYSIS OF DIFFERENTIAL EQUATIONS
U1  - 515.35 
PY  - 1982///
CY  - New York
PB  - Academic Pr.
KW  - Differential Equations
KW  - Transformation Groups
N1  - Tr. Of : Gruppovoi Analiz Differentsial'Nykh Uravnenii
ER  -