Monte Carlo study of particle identification at the CEPC using TPC dE / dx informationF. An, S. Prell, C. Chen, J. Cochran, X. Lou and M. RuanEur. Phys. J. C, 78 6 (2018) 464DOI: https://doi.org/10.1140/epjc/s10052-018-5803-3