1. Tree transducers and tree languages;Baker;Inform. Contr.,1978
2. Bottomup and topdown tree transformations—A comparison;Engelfriet;Math. Systems Theory,1975
3. Top-Down Tree Transducers with Regular Look-Ahead;Engelfriet,1975
4. Tree transducers, L systems, and two-way machines;Engelfriet,1978
5. Compositions of n tree transducers;Ogden,1972