%0 Journal Article %A Pulov, Vladimir %A Chacarov, Edy %A Uzunov, Ivan %T A Computer Algebra Application to Determination of Lie Symmetries of Partial Differential Equations %J Serdica Journal of Computing %D 2007 %P 505-518 %V 1 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJC_2007_1_4_a7/ %G en %F SJC_2007_1_4_a7