%0 Journal Article %A D. D. Kiselev %T Metacyclic $2$-extensions with cyclic kernel and the ultrasolvability questions %J Zapiski Nauchnykh Seminarov POMI %D 2017 %P 114-133 %V 460 %U http://geodesic.mathdoc.fr/item/ZNSL_2017_460_a4/ %G ru %F ZNSL_2017_460_a4