@article{MZM_1995_58_2_a0,
     author = {L. P. Vlasov},
     title = {Existence of best approximation elements in $C(Q,X)$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {163--175},
     publisher = {mathdoc},
     volume = {58},
     number = {2},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1995_58_2_a0/}
}