@article{SM_2009_200_11_a2,
     author = {M. I. Dyachenko and E. D. Nursultanov},
     title = {Hardy-Littlewood theorem for trigonometric series with $\alpha$-monotone coefficients},
     journal = {Sbornik. Mathematics},
     pages = {1617--1631},
     publisher = {mathdoc},
     volume = {200},
     number = {11},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2009_200_11_a2/}
}