@article{PFMT_2013_4_a8,
     author = {S. F. Kamornikov},
     title = {Soluble hyperradical formations},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {55--58},
     publisher = {mathdoc},
     number = {4},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2013_4_a8/}
}