@article{ZNSL_2018_469_a6,
     author = {N. D. Filonov},
     title = {Number of non-zero cubic sums},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {160--174},
     publisher = {mathdoc},
     volume = {469},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2018_469_a6/}
}