%0 Journal Article %A A. A. Kuleshov %T The fundamental solution of quadratic systems of pseudodifferential equations %J Differencialʹnye uravneniâ %D 1974 %P 1905-1907 %V 10 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1974_10_10_a20/ %G ru %F DE_1974_10_10_a20