@article{ZNSL_2017_460_a4,
     author = {D. D. Kiselev},
     title = {Metacyclic $2$-extensions with cyclic kernel and the ultrasolvability questions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {114--133},
     year = {2017},
     volume = {460},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2017_460_a4/}
}