@article{VCHGU_2012_15_a8,
     author = {F. G. Korablev},
     title = {The order of prime summands for virtual knots},
     journal = {Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika},
     pages = {119--124},
     year = {2012},
     number = {15},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VCHGU_2012_15_a8/}
}