%0 Journal Article %A N. A. Lukashevich %T On third-order linear equations %J Differencialʹnye uravneniâ %D 1999 %P 1366-1371 %V 35 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1999_35_10_a8/ %G ru %F DE_1999_35_10_a8