%0 Journal Article %A S. E. Stepanov %T On group-theoretic approach to study Einstein's and Maxwell's equations %J Teoretičeskaâ i matematičeskaâ fizika %D 1997 %P 32-43 %V 111 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1997_111_1_a2/ %G ru %F TMF_1997_111_1_a2