@article{VMUMM_1990_5_a7,
     author = {T. M. Vukolova},
     title = {Sine and cosine series with multiply monotone coefficients},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {38--42},
     year = {1990},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1990_5_a7/}
}