Aidan Hogan Andreas Harth Axel Polleres Scalable Authoritative OWL Reasoning for the Web. 49-90 2009 5 Int. J. Semantic Web Inf. Syst. 2 http://www.igi-global.com/articles/details.asp?ID=35037 db/journals/ijswis/ijswis5.html#HoganHP09