@INPROCEEDINGS {
	AUTHOR = "Pablo Barcel{\'o} and Reinhard Pichler and Sebastian Skritek",
	TITLE = "Efficient Evaluation and Approximation of Well-designed Pattern Trees",
	BOOKTITLE = "34th ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems (PODS)",
	PAGES = "131-144",
	YEAR = "2015",
	ADDRESS = "Melbourne, Australia",
	PUBLISHER = "ACM Press",
	SERIES ="ACM International Conference Proceeding Series",
	}