%0 Journal Article %A V. A. Kolpakova %A A. S. Kondrat'ev %T On finite nonsolvable $5$-primary groups with disconnected Gruenberg--Kegel graph such that $\bigl|\pi\bigl(G / F(G)\bigr)\bigr| \le 4$ %J Fundamentalʹnaâ i prikladnaâ matematika %D 2015 %P 69-87 %V 20 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2015_20_5_a7/ %G ru %F FPM_2015_20_5_a7