%0 Journal Article %A Tryhuk, Václav %T An oscillation criterion for a canonical form of third order linear differential equations %J Archivum mathematicum %D 1977 %P 175-180 %V 13 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1977__13_3_a6/ %G en %F ARM_1977__13_3_a6