%0 Journal Article %A Rachůnková, Irena %T On algebraic properties of dispersions of the 3rd and 4th kind of the differential equation $y''=q(t)y$ %J Časopis pro pěstování matematiky %D 1975 %P 15-26 %V 100 %N 1 %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1975.117864/ %R 10.21136/CPM.1975.117864 %G en %F 10_21136_CPM_1975_117864