TY - JOUR AU - Ĺ eda, Valter TI - On some non-linear boundary value problems for ordinary differential equations JO - Archivum mathematicum PY - 1989 SP - 207 EP - 222 VL - 25 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ARM_1989__25_4_a3/ LA - en ID - ARM_1989__25_4_a3 ER -