%0 Journal Article %A BarvĂ­nek, Erich %T Algebraic definition of central dispersions of the 1st kind of the differential equation $y''=Q(t)y$ %J Czechoslovak Mathematical Journal %D 1966 %P 46-62 %V 16 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1966.100709/ %R 10.21136/CMJ.1966.100709 %G en %F 10_21136_CMJ_1966_100709