@article{MZM_1996_60_3_a0,
     author = {N. N. Andreev and S. V. Konyagin and A. Yu. Popov},
     title = {Extremum problems for functions with small support},
     journal = {Matemati\v{c}eskie zametki},
     pages = {323--332},
     publisher = {mathdoc},
     volume = {60},
     number = {3},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_60_3_a0/}
}