@article{TRSPY_1994_207_a23,
     author = {S. A. Stepanov},
     title = {On lower bounds for character sums over finite fields},
     journal = {Informatics and Automation},
     pages = {297--298},
     publisher = {mathdoc},
     volume = {207},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1994_207_a23/}
}