TY - JOUR AU - W. Mlak TI - Limitations and dependence on parameter of solutions of non-stationary differential operator equations JO - Annales Polonici Mathematici PY - 1959 SP - 305 EP - 322 VL - 6 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap-6-3-305-322/ DO - 10.4064/ap-6-3-305-322 LA - en ID - 10_4064_ap_6_3_305_322 ER -