@article{VTGU_2011_3_a3,
     author = {S. Ya. Grinshpon and M. M. Nikolskaya},
     title = {Primary $IF$-groups},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {25--31},
     publisher = {mathdoc},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2011_3_a3/}
}