@article{VMUMM_2007_6_a12,
     author = {P. N. Sorokin},
     title = {Mean-value theorem of {I.} {M.~Vinogradov} for a trigonometric sum over {Gaussian} numbers},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {63--65},
     year = {2007},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2007_6_a12/}
}