1. The Theory of Parsing, Translation and Compiling I;Aho,1972
2. Bi-transductions de forets;Arnold,1976
3. Morphismes et bimorphismes d’arbes;Arnold;Theoret. Comput. Sci.,1982
4. Transductions and Context-Free Languages;Berstel,1979
5. Recognizable formal power series on trees;Berstel;Theoret. Comput. Sci.,1982