TY - JOUR AU - Kubát, Václav TI - Simultaneous integrability of two $J$-related almost tangent structures JO - Commentationes Mathematicae Universitatis Carolinae PY - 1979 SP - 461 EP - 473 VL - 20 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1979__20_3_a4/ LA - en ID - CMUC_1979__20_3_a4 ER -