秦霞, 顾政华, 李旭宏. 区域公路网布局规划方案的连通度评价指标研究[J]. 土木工程学报, 2006, 1: 112-116.
QIN Xia, GU Zhenghua and LI Xuhong. Research on evaluative index of connectivity for regional road network layout planning project. China Civil Engineering Journal, 2006, 1: 112-116. (in Chinese)