@article{publication-95,
	author={Augsten, N and B{\"o}hlen, M and Gamper, J},
	doi={10.1145/1670243.1670247},
	issn={0362-5915},
	journal={ACM Transactions on Database Systems (TODS)},
	number=1,
	pages={4:1-4:36},
	publisher={Association for Computing Machinery},
	title={The pq-gram distance between ordered labeled trees},
	volume=35,
	year=2010,
}