%0 Journal Article %A A. Yu. Popov %A A. P. Solodov %T The negative parts of the sums of~sine~series with quasimonotonic coefficients %J Sbornik. Mathematics %D 2017 %P 878-901 %V 208 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2017_208_6_a6/ %G en %F SM_2017_208_6_a6