@article{SM_2016_207_12_a6,
     author = {A. P. Solodov},
     title = {A~sharp lower bound for the sum of a~sine series with convex coefficients},
     journal = {Sbornik. Mathematics},
     pages = {1743--1777},
     year = {2016},
     volume = {207},
     number = {12},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2016_207_12_a6/}
}