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@article{MZM_2006_80_6_a12, author = {D. V. Gorbachev and M. V. Zakharova}, title = {On an extremal problem for periodic functions with small support}, journal = {Matemati\v{c}eskie zametki}, pages = {940--942}, publisher = {mathdoc}, volume = {80}, number = {6}, year = {2006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_2006_80_6_a12/} }
D. V. Gorbachev; M. V. Zakharova. On an extremal problem for periodic functions with small support. Matematičeskie zametki, Tome 80 (2006) no. 6, pp. 940-942. http://geodesic.mathdoc.fr/item/MZM_2006_80_6_a12/
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