Media type: E-Article Title: Algebraic Foundations in Computer Science: Weighted Tree Automata over Valuation Monoids and Their Characterization by Weighted Logics Contributor: Droste, Manfred; Götze, Doreen; Märcker, Steffen; Meinecke, Ingmar imprint: Springer Berlin Heidelberg, 2011 Published in: Algebraic Foundations in Computer Science Language: Not determined DOI: 10.1007/978-3-642-24897-9_2 ISSN: 0302-9743; 1611-3349 Origination: Footnote: