@article{VMUMM_1997_1_a6,
     author = {N. N. Andreev},
     title = {An extremal problem for periodic functions with small support},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {29--32},
     publisher = {mathdoc},
     number = {1},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1997_1_a6/}
}