TY - JOUR AU - W. Kulpa TI - On a problem of Banach JO - Colloquium Mathematicum PY - 1988 SP - 255 EP - 261 VL - 56 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-56-2-255-261/ DO - 10.4064/cm-56-2-255-261 LA - de ID - 10_4064_cm_56_2_255_261 ER -