TY  - BOOK
AU  - IBRAHIMOV, N.H.
TI  - CRC Handbook of Lie Group Analysis of Differential Equations: New Trends in Theo
SN  - 0-8493-9419-8
U1  - 515.35 
PY  - 1996///
CY  - London.
PB  - CRC Press
ER  -