@article{MZM_1974_16_2_a17,
     author = {L. P. Vlasov},
     title = {The concept of approximative compactness and alternate versions of it},
     journal = {Matemati\v{c}eskie zametki},
     pages = {337--348},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_16_2_a17/}
}