Xiaoxue Piao, Kai Salomaa, Sándor Vágvölgyi
Tree Homomorphisms for Unranked Trees
AFL, 2011.
@inproceedings{AFL-2011-PiaoSV, author = "Xiaoxue Piao and Kai Salomaa and Sándor Vágvölgyi", booktitle = "{Proceedings of the 13th International Conference on Automata and Formal Languages}", isbn = "978-615-5097-19-5", pages = "343--357", title = "{Tree Homomorphisms for Unranked Trees}", year = 2011, }