@article{SM_2017_208_3_a7,
     author = {T. Erd\'elyi},
     title = {Inequalities for exponential sums},
     journal = {Sbornik. Mathematics},
     pages = {433--464},
     publisher = {mathdoc},
     volume = {208},
     number = {3},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2017_208_3_a7/}
}