no. 1
PCP-prime words and primality types
RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 27 (1993) no. 1, pp. 57-70 
@article{ITA_1993__27_1_57_0,
     author = {Mateescu, Alexandru and Salomaa, Arto},
     title = {PCP-prime words and primality types},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {57--70},
     year = {1993},
     publisher = {EDP Sciences},
     volume = {27},
     number = {1},
     mrnumber = {1213421},
     zbl = {0770.68082},
     language = {en},
     url = {https://www.numdam.org/item/ITA_1993__27_1_57_0/}
}
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Mateescu, Alexandru; Salomaa, Arto. PCP-prime words and primality types. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 27 (1993) no. 1, pp. 57-70. https://www.numdam.org/item/ITA_1993__27_1_57_0/

1. K. Culik Ii and A. Salomaa, Test Sets and Checking Words for Homomorphism Equivalence, J. Comput. System Sci., 1980, 20, pp. 379-395. | Zbl | MR

2. R. C. Lyndon and M. P. Schutzenberger, The Equation aM = bN cP in Free Group, Michigan Math. J. 1962, 9, pp. 289-298. | Zbl | MR

3. E. Post, A Variant of a Recursively Unsolvable Problem, Bull. Amer. Math. Soc., 1946, 52, pp. 264-268. | Zbl | MR

4. A. Salomaa, Jewels of Formal Language Theory, Comput. Sci. Press, 1981. | Zbl | MR

5. A. Salomaa, K. Salomaa and Sheng Yu, Primality types of instances of the Post Correspondent Problem, E.A.T.C.S. Bulletin, 1991, 44. | Zbl