no. 4
On subword complexities of homomorphic images of languages
RAIRO. Informatique théorique, Tome 16 (1982) no. 4, pp. 303-316. 
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     author = {Ehrenfeucht, A. and Rozenberg, G.},
     title = {On subword complexities of homomorphic images of languages},
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     pages = {303--316},
     publisher = {EDP-Sciences},
     volume = {16},
     number = {4},
     year = {1982},
     mrnumber = {707633},
     zbl = {0495.68069},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_1982__16_4_303_0/}
}
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Ehrenfeucht, A.; Rozenberg, G. On subword complexities of homomorphic images of languages. RAIRO. Informatique théorique, Tome 16 (1982) no. 4, pp. 303-316. http://archive.numdam.org/item/ITA_1982__16_4_303_0/

1. A. Ehrenfeucht and G. Rozenberg, A Limit Theorem for Sets of Subwords in Deterministic TOL Systems, Information Processing Letters, Vol. 2, 1973, pp. 70-73. | MR | Zbl

2. A. Ehrenfeucht, K. P. Lee, and G. Rozenberg, Subword Complexities of Various Classes of Deterministic Developmental Languages without Interactions, Theoretical Computer Science, Vol. 1, 1975, pp. 59-76. | MR | Zbl

3. K. P. Lee, Subwords of Developmental Languages, Ph. D. Thesis, State University of New York at Buffalo, 1975.

4. G. Rozenberg and A. Salomaa, The Mathematical Theory of L Systems, Academic Press, London-New York, 1980. | MR | Zbl