TY - JOUR AU - Z. Polniakowski TI - On some system of linear differential equations JO - Commentationes Mathematicae PY - 1978 SP - 439 EP - 448 VL - 20 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v20i2.5917/ DO - 10.14708/cm.v20i2.5917 LA - pl ID - 10_14708_cm_v20i2_5917 ER -