Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1987_42_2_a17, author = {S. N. Smirnov}, title = {Recurrence of absolute-difference chains}, journal = {Matemati\v{c}eskie zametki}, pages = {336--342}, publisher = {mathdoc}, volume = {42}, number = {2}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1987_42_2_a17/} }
S. N. Smirnov. Recurrence of absolute-difference chains. Matematičeskie zametki, Tome 42 (1987) no. 2, pp. 336-342. http://geodesic.mathdoc.fr/item/MZM_1987_42_2_a17/