Ming Zhao Zhigang Chen Xiaoheng Deng Lianming Zhang Anfeng Liu Guosheng Huang MAEC : A Movement-Assisted Energy Conserving Method in Event Driven Wireless Sensor Networks http://arxiv.org/abs/cs/0507009 2005 CoRR abs/cs/0507009 db/journals/corr/corr0507.html#abs-cs-0507009 informal publication