TY - JOUR AU - Andres, Jan TI - Solution with periodic second derivative of a certain third order differential equation JO - Mathematica slovaca PY - 1987 SP - 239 EP - 245 VL - 37 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_1987__37_3_a1/ LA - en ID - MASLO_1987__37_3_a1 ER -