Dawei Huang Fang Liu Xiangdong Shi Guangxin Yang Ludi Zheng Zhiyu Zhou MapWeb: A location-based converged communications platform. 159-171 2006 11 Bell Labs Technical Journal 1 http://dx.doi.org/10.1002/bltj.20150 db/journals/bell/bell11.html#HuangLSYZZ06