TY - JOUR AU - Friedrich Tomi TI - A Pertubation Theorem for Surfaces of Constant Mean Curvature. JO - Mathematische Zeitschrift PY - 1975 SP - 253 EP - 264 VL - 141 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1975__141_172172/ ID - MZ_1975__141_172172 ER -