Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1958_118_4_a1, author = {P. G. Kogoniya}, title = {Condensation points of the set of {Markoff} numbers}, journal = {Doklady Akademii Nauk}, pages = {632--635}, publisher = {mathdoc}, volume = {118}, number = {4}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_118_4_a1/} }
P. G. Kogoniya. Condensation points of the set of Markoff numbers. Doklady Akademii Nauk, Tome 118 (1958) no. 4, pp. 632-635. http://geodesic.mathdoc.fr/item/DAN_1958_118_4_a1/