@article{1183419949,
author = {Ranum, Arthur},
title = {On periodic linear substitutions whose coefficients are integers},
journal = {Bull. Amer. Math. Soc.},
volume = {15},
number = {3},
year = {1908},
pages = { 4-6},
language = {en},
url = {http://dml.mathdoc.fr/item/1183419949}
}
Ranum, Arthur. On periodic linear substitutions whose coefficients are integers. Bull. Amer. Math. Soc., Tome 15 (1908) no. 3, pp. 4-6. http://gdmltest.u-ga.fr/item/1183419949/