%0 Journal Article %A Ráb, Miloš %T Asymptotic behaviour of the equation $x''+p(t)x'+q(t)x=0$ with complex-valued coefficients %J Archivum mathematicum %D 1975 %P 193-204 %V 11 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1975__11_4_a1/ %G en %F ARM_1975__11_4_a1