Tauseef Ahmed,Jiang Tao. A Multi-Strategy Approach for Global Maritime Distress and Safety System[EB/OL]. Beijing:Sciencepaper Online[2010-04-23]. http://www.paper.edu.cn/releasepaper/content/201004-891. 此文件来自 中国科技论文在线 请勿作用于商业用途!