@article{TIMM_2011_17_3_a12,
     author = {A. S. Belov},
     title = {On the extremal problem about the minimum of the free term of a~nonnegative trigonometric polynomial},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {105--121},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2011_17_3_a12/}
}