%0 Journal Article %A Kubát, Václav %T Simultaneous integrability of two $J$-related almost tangent structures %J Commentationes Mathematicae Universitatis Carolinae %D 1979 %P 461-473 %V 20 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1979__20_3_a4/ %G en %F CMUC_1979__20_3_a4