TY  - BOOK
AU  - Ovsiannikov,L.V.
AU  - Ames,William F.
TI  - Group analysis of differential equations
PY  - 1982///
CY  - New York
PB  - Academic Press
KW  - Differential equations
KW  - Transformation groups
N1  - Includes bibliographical references and index; Original title; Gruppovoi analiz differen t sial nykh uravnenii
ER  -