@article{CRMATH_2015__353_4_283_0,
     author = {Chang, Mei-Chu},
     title = {On periods modulo \protect\emph{p} in arithmetic dynamics},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {283--285},
     publisher = {Elsevier},
     volume = {353},
     number = {4},
     year = {2015},
     doi = {10.1016/j.crma.2015.01.007},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2015.01.007/}
}