@article{IM2_1995_44_3_a5,
     author = {Z. Kh. Rakhmonov},
     title = {A theorem on the mean value of {Chebishev} functions},
     journal = {Izvestiya. Mathematics },
     pages = {555--569},
     publisher = {mathdoc},
     volume = {44},
     number = {3},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1995_44_3_a5/}
}