@article{ZNSL_1994_211_a7,
     author = {V. V. Ishkhanov and B. B. Lur'e},
     title = {On the embedding problem with {non-Abelian} kernel of order~$p^4${.~IV}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {120--126},
     publisher = {mathdoc},
     volume = {211},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1994_211_a7/}
}