no. 3
Compositional representation of rational functions
RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 26 (1992) no. 3, pp. 243-255. 
@article{ITA_1992__26_3_243_0,
     author = {Harju, T. and Kleijn, H. C. M. and Latteux, M.},
     title = {Compositional representation of rational functions},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {243--255},
     publisher = {EDP-Sciences},
     volume = {26},
     number = {3},
     year = {1992},
     mrnumber = {1170325},
     zbl = {0769.68097},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1992__26_3_243_0/}
}
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Harju, T.; Kleijn, H. C. M.; Latteux, M. Compositional representation of rational functions. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 26 (1992) no. 3, pp. 243-255. http://www.numdam.org/item/ITA_1992__26_3_243_0/

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