@article{TM_2017_296_a20,
     author = {A. S. Volostnov and I. D. Shkredov},
     title = {Sums of multiplicative characters with additive convolutions},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {265--279},
     publisher = {mathdoc},
     volume = {296},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2017_296_a20/}
}