@article{SM_2016_207_8_a5,
     author = {M. A. Korolev},
     title = {Karatsuba's method for estimating {Kloosterman} sums},
     journal = {Sbornik. Mathematics},
     pages = {1142--1158},
     publisher = {mathdoc},
     volume = {207},
     number = {8},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2016_207_8_a5/}
}