@article{DAN_1965_161_4_a0,
     author = {N. M. Akulinichev},
     title = {Bounds for rational trigonometric sums of a special type},
     journal = {Doklady Akademii Nauk},
     pages = {743--745},
     publisher = {mathdoc},
     volume = {161},
     number = {4},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_161_4_a0/}
}