In: Kevin McMillan; Aart Middeldorp; Andrei Voronkov (Hrsg.). Proceedings of the 19th International Conference on Logic for Programming, Artificial Intelligence and Reasoning. International Conference on Logic for Programming, Artificial Intelligence, and Reasoning (LPAR-2013), 19th, December 14-19, Stellenbosch, South Africa, Pages 53-70, Lecture Notes in Computer Science, Vol. 8312, Springer, 2013.