Manuele Kirsch-Pinheiro Yves Vanrompay Koen Victor Yolande Berbers Massimo Valla Cristina Fra Alessandro Mamelli Paolo Barone Xiaoming Hu Alisa Devlic G. Panagiotou Context Grouping Mechanism for Context Distribution in Ubiquitous Environments. 571-588 2008 OTM Conferences (1) http://dx.doi.org/10.1007/978-3-540-88871-0_41 conf/otm/2008-1 db/conf/otm/otm2008-1.html#Kirsch-PinheiroVVBVFMBHDP08