TY - Journal of Beijing University of Posts and Telecommunications A1 - SHU Jian, JIANG Wen-liang, LIU Lin-lan T1 - Critical Nodes Evaluation of Opportunistic Networks Based on Topological Condensation Graph Y1 - 2019-04-09 00:00:00.0 JF - Journal of Beijing University of Posts and Telecommunications JO - Journal of Beijing University of Posts and Telecommunications SP - 57 EP - 62 VL - 42 IS - 2 UR - {https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2018-234} N1 - 10.13190/j.jbupt.2018-234 ER -