@article{VMUMM_1995_1_a7,
     author = {P. L. Ul'yanov},
     title = {On moduli of continuity and {Fourier} coefficients},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {37--52},
     year = {1995},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1995_1_a7/}
}