区域创新环境是否提高了中国信息技术产业创新效率——基于两阶段创新过程的实证研究
张之光,杜宁,马祎晗
Does the Regional Innovation Environment Improve the Innovation Efficiency of China's Information Technology Industry
Zhang Zhiguang,Du Ning,Ma Yihan
科技进步与对策 . 2020, (5): 47 -56 .  DOI: 10.6049/kjjbydc.Q201908964