@book{58391,
	author = {Wendy MacCaull, Michael Winter, Ivo Düntsch},
	title = {Relational Methods in Computer Science},
	publisher = {Springer},
	year = {2006},
	address = {Germany},
	url = {http://link.springer.com/openurl?genre=book&isbn=978-3-540-33339-5}
}