%0 Journal Article %A S. E. Kozlov %T Stationarity of curvature of two-dimensional totally geodesic submanifolds in the Grassmannian of bevectors %J Zapiski Nauchnykh Seminarov POMI %D 2001 %P 175-185 %V 280 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2001_280_a11/ %G ru %F ZNSL_2001_280_a11