TY - JOUR AU - Ferrández, Angel AU - Naveira, Antonio Martínez TI - Normal form of the NK-curvature operators JO - Czechoslovak Mathematical Journal PY - 1982 SP - 404 EP - 417 VL - 32 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1982.101817/ DO - 10.21136/CMJ.1982.101817 LA - en ID - 10_21136_CMJ_1982_101817 ER -