@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/