@article{VTGU_2015_2_a2,
     author = {G. G. Pestov and A. I. Zabarina and A. A. Tobolkin and E. A. Fomina},
     title = {On $2$-ordered groups},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {30--40},
     publisher = {mathdoc},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2015_2_a2/}
}