@article{ZNSL_1995_227_a9,
     author = {V. V. Ishkhanov and B. B. Lur'e},
     title = {On the embedding problem with noncommutative kernel of order $p^4${.~VI}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {74--82},
     year = {1995},
     volume = {227},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1995_227_a9/}
}