no. R2
A pumping theorem for deterministic ETOL languages
RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 9 (1975) no. R2, pp. 13-23. 
@article{ITA_1975__9_2_13_0,
     author = {Ehrenfeucht, A. and Rozenberg, G.},
     title = {A pumping theorem for deterministic {ETOL} languages},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {13--23},
     publisher = {Dunod-Gauthier-Villars},
     address = {Paris},
     volume = {9},
     number = {R2},
     year = {1975},
     mrnumber = {388860},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1975__9_2_13_0/}
}
TY  - JOUR
AU  - Ehrenfeucht, A.
AU  - Rozenberg, G.
TI  - A pumping theorem for deterministic ETOL languages
JO  - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
PY  - 1975
DA  - 1975///
SP  - 13
EP  - 23
VL  - 9
IS  - R2
PB  - Dunod-Gauthier-Villars
PP  - Paris
UR  - http://www.numdam.org/item/ITA_1975__9_2_13_0/
UR  - https://www.ams.org/mathscinet-getitem?mr=388860
LA  - en
ID  - ITA_1975__9_2_13_0
ER  - 
Ehrenfeucht, A.; Rozenberg, G. A pumping theorem for deterministic ETOL languages. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 9 (1975) no. R2, pp. 13-23. http://www.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 0314.68027

[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 0339.68055