%0 Journal Article %A G. A. Galperin %T Two-dimensional configuration in the three-dimensional problem of four gravitating bodies %J Russian journal of nonlinear dynamics %D 2005 %P 215-232 %V 1 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2005_1_2_a4/ %G ru %F ND_2005_1_2_a4