Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1994__44_1_a7, author = {Korec, Ivan}, title = {A density estimate for the $3x+1$ problem}, journal = {Mathematica slovaca}, pages = {85--89}, publisher = {mathdoc}, volume = {44}, number = {1}, year = {1994}, mrnumber = {1290275}, zbl = {0797.11027}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1994__44_1_a7/} }
Korec, Ivan. A density estimate for the $3x+1$ problem. Mathematica slovaca, Tome 44 (1994) no. 1, pp. 85-89. http://geodesic.mathdoc.fr/item/MASLO_1994__44_1_a7/