@article{MZM_1987_42_4_a2,
     author = {N. I. Dubrovin},
     title = {Invertibility of the group ring of a right-ordered group over a skew field},
     journal = {Matemati\v{c}eskie zametki},
     pages = {508--518},
     publisher = {mathdoc},
     volume = {42},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1987_42_4_a2/}
}