@article{VMUMM_1999_1_a5,
     author = {Wang Kunyang and S. A. Telyakovskii},
     title = {Differential properties of sums of a class of trigonometric series},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {24--29},
     publisher = {mathdoc},
     number = {1},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1999_1_a5/}
}