Qiao, Yu; Ding, Chengri; Liu, Jianhua - In: Journal of urban management 8 (2019) 2, pp. 303-315
agglomeration increases the negative impact of knowledge spillover on firms' R&D efforts. We then use high-tech, firm-level data … localization agglomeration. Our Tobit model yields estimated results that are consistent with our predictions. That is, R&D effort … localization agglomeration. These results are robust by different subsamples and different estimators. We also find evidence …