TY - BOOK AU - Ibragimov, N H., Ed. TI - Lie Group Analysis of Differential Equations - Vols.1-3; 1:Symm.Solutions and Consern.Laws;2:Appl.in Eng.and Phys.Sci.; 3:Theo. Devel. and computational methods SN - 0 8493 9419 8 CY - USA KW - Differential Equations - Numerical Solutions ER -