@article{MZM_1981_30_6_a7,
     author = {V. D. Koshmanenko},
     title = {Closure of extension of linear forms with passage to a new space},
     journal = {Matemati\v{c}eskie zametki},
     pages = {857--864},
     publisher = {mathdoc},
     volume = {30},
     number = {6},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1981_30_6_a7/}
}