%0 Journal Article %A Laitoch, Miroslav %T First phases of the associated equation with parameters for the differential equation $y''=q(t)y$ %J Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica %D 1994 %P 75-93 %V 33 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AUPO_1994__33_1_a8/ %G en %F AUPO_1994__33_1_a8