%0 Journal Article %A Vala, Josef %T Grassmann manifold $V\sp 4\sb 3$ in the projective space $P\sb 7$ with characteristics consisting of a quadric and two planes %J Mathematica Bohemica %D 1993 %P 225-240 %V 118 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.1993.125928/ %R 10.21136/MB.1993.125928 %G en %F 10_21136_MB_1993_125928