TY - JOUR AU - Cin Hua Szu TI - On asymptotic development for solutions of ordinary differential equations JO - Annales Polonici Mathematici PY - 1968 SP - 19 EP - 40 VL - 20 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap-20-1-19-40/ DO - 10.4064/ap-20-1-19-40 LA - en ID - 10_4064_ap_20_1_19_40 ER -