北京高科技产业集聚过程及其影响因素
李国平,孙铁山,卢明华
A Study on the Process, Characteristics and Influencing Factors of Beijing's Hi-Tech Industrial Agglomeration
LI Guoping, SUN Tieshan, LU Minghua
地理学报 . 2003, (6): 927 -936 .  DOI: 10.11821/xb200306016