@article{杨凡_492, author = {[杨凡, 杜德斌, 段德忠, 林晓]}, title = {城市内部研发密集型制造业的空间分布与区位选择模式——以北京、上海为例}, publisher = {地理科学}, year = {2017}, journal = {地理科学}, volume = {37}, number = {4}, eid = {492}, pages = {492-501}, keywords = {研发密集型制造业;空间分布;区位模式;北京;上海}, doi = http://geoscien.neigae.ac.cn/CN/10.13249/j.cnki.sgs.2017.04.002 }