%0 Journal Article %A V. N. Laptinskii %A V. V. Pugin %T Certain special transformations of matrix differential equations of Riccati type %J Differencialʹnye uravneniâ %D 1972 %P 1511-1514 %V 8 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1972_8_8_a24/ %G ru %F DE_1972_8_8_a24