1. Chi Renyong, et al. “An analysis of differences in innovation efficiency between the eastern & the western regions in china and its causes” no. 8, China Soft Science, 2004, pp.127–131.
2. Comparing regional innovative capacities of PR China based on data analysis of the national patents
3. Measuring the performance of Chinese regional innovation systems with two-stage DEA-based model
4. Measuring the Efficiency of China's Regional Innovation Systems: Application of Network Data Envelopment Analysis (DEA)
5. Su Yi, et al. “Regional innovation system performances based on stochastic frontier analysis” no. 1, Journal of Systems Engineering, 2013, pp.125–133.