@article{10_4064_cm133_2_5,
     author = {Sebastian Hebda},
     title = {On the {Collatz} conjecture},
     journal = {Colloquium Mathematicum},
     pages = {189--195},
     publisher = {mathdoc},
     volume = {133},
     number = {2},
     year = {2013},
     doi = {10.4064/cm133-2-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm133-2-5/}
}