可视化

    世界城市地铁发展历程与规律
    曹小曙, 林强
    The Evolution of Worldwide Metro Systems: A Study on Their Scales and Network Indexes
    CAO Xiaoshu, LIN Qiang
    地理学报 . 2008, (12): 1257 -1267 .  DOI: 10.11821/xb200812003