%0 Journal Article %A Kalas, Josef %T Asymptotic behaviour of the system of two differential equations %J Archivum mathematicum %D 1975 %P 175-186 %V 11 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1975__11_3_a5/ %G en %F ARM_1975__11_3_a5