@article{10_4064_aa_92_2_181_188,
     author = {T. Brox},
     title = {Collatz cycles with few descents},
     journal = {Acta Arithmetica},
     pages = {181--188},
     publisher = {mathdoc},
     volume = {92},
     number = {2},
     year = {2000},
     doi = {10.4064/aa-92-2-181-188},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-92-2-181-188/}
}