id: 70980000 dt: a an: 70980000 au: Xiong, Jinhua; Wojciechowski, Manfred ti: A middleware supporting context-aware services based on context business objects so: GCC, 379-386 (2007). py: 2007 pu: la: EN cc: ut: ci: li: http://doi.ieeecomputersociety.org/10.1109/GCC.2007.16