%0 Journal Article %A Andres, Jan %T Solution with periodic second derivative of a certain third order differential equation %J Mathematica slovaca %D 1987 %P 239-245 %V 37 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1987__37_3_a1/ %G en %F MASLO_1987__37_3_a1