Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1982_32_1_a0, author = {E. K. Godunova and V. I. Levin}, title = {Lower bound for a cyclic sum}, journal = {Matemati\v{c}eskie zametki}, pages = {3--7}, publisher = {mathdoc}, volume = {32}, number = {1}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1982_32_1_a0/} }
E. K. Godunova; V. I. Levin. Lower bound for a cyclic sum. Matematičeskie zametki, Tome 32 (1982) no. 1, pp. 3-7. http://geodesic.mathdoc.fr/item/MZM_1982_32_1_a0/