@article{10_4064_cm105_2_3,
     author = {V. I. Sushchanski and E. Mo\'cko and V. V. Nekrashevych},
     title = {Cycles of distance-decreasing mappings
 in the ring of $n$-adic integers},
     journal = {Colloquium Mathematicum},
     pages = {197--205},
     publisher = {mathdoc},
     volume = {105},
     number = {2},
     year = {2006},
     doi = {10.4064/cm105-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm105-2-3/}
}