TY - JOUR AU - Donald Orth TI - Welding Riemann Surfaces and Transmission Problems with Shifts. JO - Commentarii mathematici Helvetici PY - 1969 SP - 120 EP - 137 VL - 44 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMH_1969__44_139387/ ID - CMH_1969__44_139387 ER -