TY - JOUR AU - B. Rzepecki TI - On the Banach principle and its application to the theory of differential equations JO - Commentationes Mathematicae PY - 1977 SP - 355 EP - 363 VL - 19 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v19i2.5868/ DO - 10.14708/cm.v19i2.5868 LA - pl ID - 10_14708_cm_v19i2_5868 ER -