TY - GEN AU - Olver, Peter J. TI - Applications of lie groups to differential equations T2 - Axler, S SN - 9780387950006 U1 - 515.35 Ol9a2 PY - 1993/// CY - Verlag PB - Springer KW - Lie groups KW - Differential equations KW - Symmetry group KW - Conversion laws KW - Hamittonian methods ER -