TY - JOUR AU - Došlý, Ondřej TI - Riccati matrix differential equation and classification of disconjugate differential systems JO - Archivum mathematicum PY - 1987 SP - 231 EP - 241 VL - 23 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ARM_1987__23_4_a4/ LA - en ID - ARM_1987__23_4_a4 ER -