TY - JOUR AU - Toshikazu Sunada TI - Rigidity of Certain Harmonic Mappings. JO - Inventiones mathematicae PY - 1979 SP - 297 EP - 307 VL - 51 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1979__51_142638/ ID - IM_1979__51_142638 ER -