@article{ITA_1986__20_1_47_0, author = {Harju, Tero and Linna, Matti}, title = {On the periodicity of morphisms on free monoids}, journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications}, volume = {20}, year = {1986}, pages = {47-54}, mrnumber = {849965}, zbl = {0608.68065}, language = {en}, url = {http://dml.mathdoc.fr/item/ITA_1986__20_1_47_0} }
Harju, Tero; Linna, Matti. On the periodicity of morphisms on free monoids. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 20 (1986) pp. 47-54. http://gdmltest.u-ga.fr/item/ITA_1986__20_1_47_0/
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