TY - JOUR AU - Rachůnková, Irena TI - Periodic boundary value problems for third order differential equations JO - Mathematica slovaca PY - 1991 SP - 241 EP - 248 VL - 41 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_1991__41_3_a2/ LA - en ID - MASLO_1991__41_3_a2 ER -