TY - JOUR AU - Wolfgang Wasow TI - The Central Connection Problem at Turning Points of Linear Differential Equations JO - Commentarii mathematici Helvetici PY - 1971 SP - 65 VL - 46 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/item/CMH_1971__46_139462/ LA - un ID - CMH_1971__46_139462 ER -