@inproceedings{kiefer07isparql,
        title = {The Fundamentals of {iSPARQL} --- A Virtual Triple Approach For Similarity-Based Semantic Web Tasks},
        author = {Christoph Kiefer and Abraham Bernstein and Markus Stocker},
        booktitle = {The Semantic Web --- Proceedings of the 6th International Semantic Web Conference and the 2nd Asian Semantic Web Conference (ISWC 2007 + ASWC 2007), November 11-15, 2007, Busan, Korea},
        editor = {Karl Aberer and Key-Sun Choi and Natasha Noy and Dean Allemang and Kyung-Il Lee and Lyndon J B Nixon and Jennifer Golbeck and Peter Mika and Diana Maynard and Guus Schreiber and Philippe Cudré-Mauroux},
        month = {November},
        pages = {295--308},
        publisher = {Springer, Berlin--Heidelberg, Germany},
        series = {Lecture Notes in Computer Science},
        volume = 4825,
        year = 2007,
        biburl = {http://www.bibsonomy.org/bibtex/201707102e72e4ce801ed85eb4dfea420/sb3000},
	keywords = {ontologies similarity sparql}
}

@techreport{w3c06sparql-workingdraft,
        title = {{SPARQL} Query Language for {RDF}},
        author = {Eric Prud'hommeaux and Andy Seaborne},
        institution = {{W3C}},
        month = {March},
        note = {Published online on March 26th, 2007 at \url{http://www.w3.org/TR/2007/WD-rdf-sparql-query-20070326/}},
        type = {{W3C} Working Draft},
        year = 2007,
        url = {http://www.w3.org/TR/2007/WD-rdf-sparql-query-20070326/},
        biburl = {http://www.bibsonomy.org/bibtex/2a14b247c69edb3bd434c1bd3db5eb92a/sb3000},
	keywords = {query rdf sparql}
}

@inproceedings{siberski06querying,
        title = {Querying the Semantic Web with Preferences},
        author = {Wolf Siberski and Jeff Z. Pan and U. Thaden},
        booktitle = {Proceedings of the 5th International Semantic Web Conference (ISWC 2006), Athens, GA, USA, 2006},
        year = 2006,
        url = {http://www.kbs.uni-hannover.de/Arbeiten/Publikationen/2006/iswc2006.pdf},
        biburl = {http://www.bibsonomy.org/bibtex/26ffbc28aec953570a7424ef254624c74/sb3000},
	keywords = {similarity sparql}
}