TY - JOUR AU - Kalas, Josef TI - Asymptotic behaviour of the system of two differential equations JO - Archivum mathematicum PY - 1975 SP - 175 EP - 186 VL - 11 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ARM_1975__11_3_a5/ LA - en ID - ARM_1975__11_3_a5 ER -