On the periodicity of morphisms on free monoids
RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 20 (1986) no. 1, pp. 47-54. 
@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},
     pages = {47--54},
     publisher = {AFCET - Gauthier-Villars},
     address = {Paris},
     volume = {20},
     number = {1},
     year = {1986},
     mrnumber = {849965},
     zbl = {0608.68065},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_1986__20_1_47_0/}
}
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AU  - Linna, Matti
TI  - On the periodicity of morphisms on free monoids
JO  - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
PY  - 1986
SP  - 47
EP  - 54
VL  - 20
IS  - 1
PB  - AFCET - Gauthier-Villars
PP  - Paris
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%D 1986
%P 47-54
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%I AFCET - Gauthier-Villars
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Harju, Tero; Linna, Matti. On the periodicity of morphisms on free monoids. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 20 (1986) no. 1, pp. 47-54. http://archive.numdam.org/item/ITA_1986__20_1_47_0/

1. K. Culik Ii, The Ultimate Equivalence Problem for DOL Systems, Acta Informatica, Vol. 10, 1978, pp. 79-84. | MR | Zbl

2. A. Ehrenfeucht and G. Rozenberg, On Simplifications of PDOL Systems, Proceedings of a Conference on Theoretical Computer Science, University of Waterloo, Waterloo, Ontario, Canada, 1977. | MR | Zbl

3. T. Harju and M. Linna, The equations h(w) = wn in binary alphabets, Theoret. Comput. Sci. 33, 1984, pp. 327-329. | MR | Zbl

4. T. Head, Adherence Equivalence is Decidable for DOL Languages, Proceedings of a Symposium of Theoretical Aspects of Computer Science, Paris, 1984, Springer Lecture Notes in Computer Science, Vol. 166, 1984, pp. 241-248. | MR | Zbl

5. M. Linna, The Decidability of the DOL Prefix Problem, Int. J. Comput. Math., Vol. 6, 1977, pp. 127-142. | MR | Zbl

6. M. Linna, On Periodic ω-Sequences Obtained by Iterating Morphisms, Ann. Univ. Turkuensis, Ser. A I 186 1984, pp. 64-71. | MR | Zbl

7. A. Salomaa, Comparative Decision Problems between Sequential and Parallel Rewriting, Proc. Symp. Uniformly Structured Automata and Logic, Tokyo, 1975, pp. 62-66. | MR