Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1989_46_4_a3, author = {B. V. Levin and N. M. Timofeev}, title = {One additive problem}, journal = {Matemati\v{c}eskie zametki}, pages = {25--33}, publisher = {mathdoc}, volume = {46}, number = {4}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1989_46_4_a3/} }
B. V. Levin; N. M. Timofeev. One additive problem. Matematičeskie zametki, Tome 46 (1989) no. 4, pp. 25-33. http://geodesic.mathdoc.fr/item/MZM_1989_46_4_a3/