no. R2
A pumping theorem for deterministic ETOL languages
Revue française d'automatique informatique recherche opérationnelle. Informatique théorique, Tome 9 (1975) no. R2, pp. 13-23. 
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     title = {A pumping theorem for deterministic {ETOL} languages},
     journal = {Revue fran\c{c}aise d'automatique informatique recherche op\'erationnelle. Informatique th\'eorique},
     pages = {13--23},
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     address = {Paris},
     volume = {9},
     number = {R2},
     year = {1975},
     mrnumber = {388860},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_1975__9_2_13_0/}
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Ehrenfeucht, A.; Rozenberg, G. A pumping theorem for deterministic ETOL languages. Revue française d'automatique informatique recherche opérationnelle. Informatique théorique, Tome 9 (1975) no. R2, pp. 13-23. http://archive.numdam.org/item/ITA_1975__9_2_13_0/

[1] P. J. Downey, Developmental Systems and recursion schemes, Proceedings of the Conference on Biologically Motivated Theory, McLean, Virgina, 1974, p. 54-58.

[2] A. Ehrenfeucht and G. Rozenberg, The equality of EOL languages and codings of OL languages, International Journal of Computer Mathematics, 4 (1974), 95-104. | Zbl

[3] A. Ehrenfeucht, G. Rozenberg and S. Skyum, A relationship between ETOL and EDTOL languages, submitted for publications; also available as a technical report PB-40/74 of the Computer Science Department, Aarhus University, Aarhus, Denmark, 1974. | Zbl