@article{MZM_1978_23_4_a0,
     author = {A. B. Venkov},
     title = {A~formula for the {Chebyshev} {PSI} function},
     journal = {Matemati\v{c}eskie zametki},
     pages = {497--503},
     publisher = {mathdoc},
     volume = {23},
     number = {4},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1978_23_4_a0/}
}