Christof Löding, Karianto Wong. On Nondeterministic Unranked Tree Automata with Sibling Constraints. In Ravi Kannan, K. Narayan Kumar, editors, IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science, FSTTCS 2009, December 15-17, 2009, IIT Kanpur, India. Volume 4 of LIPIcs, pages 311-322, Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, 2009. [doi]
Abstract is missing.