@article{SM_1971_13_2_a1,
     author = {A. L. Garkavi},
     title = {The {Helly} problem and best approximation of summable functions},
     journal = {Sbornik. Mathematics},
     pages = {187--207},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1971_13_2_a1/}
}