TY - JOUR AU - Ewa Ligocka TI - Levi forms, differential forms of type (0,1) and pseudoconvexity in Banach spaces JO - Annales Polonici Mathematici PY - 1976 SP - 63 EP - 69 VL - 33 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap-33-1-63-69/ DO - 10.4064/ap-33-1-63-69 LA - en ID - 10_4064_ap_33_1_63_69 ER -