@article{MZM_1986_40_3_a1,
     author = {A. N. Zhitkov},
     title = {Estimates of trigonometric integrals},
     journal = {Matemati\v{c}eskie zametki},
     pages = {310--320},
     publisher = {mathdoc},
     volume = {40},
     number = {3},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1986_40_3_a1/}
}