Hung Keng Pung Tao Gu Wenwei Xue Paulito P. Palmes Jian Zhu Wen Long Ng Chee Weng Tang Nguyen Hoang Chung Context-aware middleware for pervasive elderly homecare. 510-524 2009 27 IEEE Journal on Selected Areas in Communications 4 http://dx.doi.org/10.1109/JSAC.2009.090513 db/journals/jsac/jsac27.html#PungGXPZNTC09