@article{MZM_1970_8_5_a5, author = {A. L. Garkavi}, title = {The existence of a~best approximating element in $(F)$-space with integral metric}, journal = {Matemati\v{c}eskie zametki}, pages = {583--594}, publisher = {mathdoc}, volume = {8}, number = {5}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1970_8_5_a5/} }