@article{VTGU_2009_1_a4,
     author = {A. R. Chekhlov},
     title = {On projective invariant subgroups of abelian groups},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {31--36},
     publisher = {mathdoc},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2009_1_a4/}
}