J. Völker, and M. Niepert. Proceedings of the 8th Extended Semantic Web Conference (ESWC 2011), page 124--138. Heraklion, Crete, Springer-Verlag, (2011)
J. Völker, and M. Niepert. Proceedings of the 8th Extended Semantic Web Conference (ESWC 2011), page 124--138. Heraklion, Crete, Springer-Verlag, (2011)