%0 Journal Article %A E. I. Kugushev %A V. I. Nikonov %T An estimate for the number of relative equilibria in the motion of a plane rigid body and a material point under mutual attraction %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2015 %P 37-41 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_2015_6_a5/ %G ru %F VMUMM_2015_6_a5