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@article{JIS_2008__11_4_a3, author = {Snapp, Bart and Tracy, Matt}, title = {The {Collatz} problem and analogues}, journal = {Journal of integer sequences}, publisher = {mathdoc}, volume = {11}, number = {4}, year = {2008}, language = {en}, url = {http://geodesic.mathdoc.fr/item/JIS_2008__11_4_a3/} }
Snapp, Bart; Tracy, Matt. The Collatz problem and analogues. Journal of integer sequences, Tome 11 (2008) no. 4. http://geodesic.mathdoc.fr/item/JIS_2008__11_4_a3/