%0 Journal Article %A D. I. Panyushev %T Complexity and rank of homogeneous spaces and the co-isotropy %J Doklady Akademii Nauk %D 1989 %P 276-279 %V 307 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1989_307_2_a3/ %G ru %F DAN_1989_307_2_a3