@article{MZM_2003_73_5_a13,
     author = {D. V. Gorbachev},
     title = {An {Extremum} {Problem} for {Periodic} {Functions} with {Small} {Support}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {773--778},
     publisher = {mathdoc},
     volume = {73},
     number = {5},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2003_73_5_a13/}
}