%0 Journal Article %A I. V. Savel'ev %T Semifree actions on spheres %J Fundamentalʹnaâ i prikladnaâ matematika %D 2005 %P 197-207 %V 11 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2005_11_5_a14/ %G ru %F FPM_2005_11_5_a14