00000nam a2200000 a 4500 20251203110726.0 0849344883 512.55 CRC _ Ibragimov, N.H CRC Handbook of Lie Group analysis of Differential Equations Vol 1 Symmetries Exact Solutions and Conservation Laws Boca Raton CRC Press 1994 xiii, 429p. 29cm HB Indo--French Project Differential equations-Numerical solutions _ 118693 LIBSC C 100419 100419 0 0 0 0 PU PU 2006-03-23 99.95 0 512.55 CRC 118693 BK