TY - JOUR AU - Wlodzimierz Waliszewski TI - On differential spaces whose Cartesian product is a differentiable manifold JO - Colloquium Mathematicum PY - 1987 SP - 205 EP - 209 VL - 53 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-53-2-205-209/ DO - 10.4064/cm-53-2-205-209 LA - en ID - 10_4064_cm_53_2_205_209 ER -