BiRch：一种处理k步可达性查询的双向搜索算法
周军锋,陈伟,费春苹,陈子阳
BiRch:a bidirectional search algorithm for k-step reachability queries
Jun-feng ZHOU,Wei CHEN,Chun-ping FEI,Zi-yang CHEN
通信学报 . 2015, (8): 50 -60 .  DOI: 10.11959/j.issn.1000-436x.2015230