Luiz Olavo Bonino da Silva Santos Marten van Sinderen Luís Ferreira Pires Dynamic service discovery and composition for ubiquitous networks applications. 52 2006 CoNEXT http://doi.acm.org/10.1145/1368436.1368497 conf/conext/2006 db/conf/conext/conext2006.html#SantosSP06