%0 Journal Article %A V. I. Ivanov %A D. V. Gorbachev %A Yu. D. Rudomazina %T Some extremal problems for periodic functions with conditions on their values and Fourier coefficients %J Trudy Instituta matematiki i mehaniki %D 2005 %P 92-111 %V 11 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMM_2005_11_2_a7/ %G ru %F TIMM_2005_11_2_a7