RT Journal T1 Product Market Competition and Innovation: What Can We Learn from Economic Theory? A1 Zhiqi Chen PB Front. Econ. China FD 2017-09-15 YR 2017 JF Frontiers of Economics in China JO Front. Econ. China VO 12 IS 3 SP 450 DO 10.3868/s060-006-017-0019-2 K1 innovation;product market competition;incentive LK {https://journal.hep.com.cn/fec/EN/article/article_20752.shtml}