@article{ZNSL_2022_517_a9,
     author = {N. V. Proskurin},
     title = {On quadric exponential sums},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {162--175},
     publisher = {mathdoc},
     volume = {517},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2022_517_a9/}
}