@Inproceedings{EPTCS31.17, author = {Piao, Xiaoxue and Salomaa, Kai}, year = {2010}, title = {Operational State Complexity of Deterministic Unranked Tree Automata}, editor = {McQuillan, Ian and Pighizzini, Giovanni}, booktitle = {{\rm Proceedings Twelfth Annual Workshop on} Descriptional Complexity of Formal Systems, {\rm Saskatoon, Canada, 8-10th August 2010}}, series = {Electronic Proceedings in Theoretical Computer Science}, volume = {31}, publisher = {Open Publishing Association}, pages = {149-158}, doi = {10.4204/EPTCS.31.17}, }