Alessandra Agostini Claudio Bettini Daniele Riboni Hybrid reasoning in the CARE middleware for context awareness. 3-23 2009 5 Int. J. Web Eng. Technol. 1 http://dx.doi.org/10.1504/IJWET.2009.025011 db/journals/ijwet/ijwet5.html#AgostiniBR09