The strong decays of X(3940) and X(4160) Zhi-Hui Wang, Yi Zhang, Li-Bo Jiang, Tian-hong Wang, Yue Jiang and Guo-Li Wang Eur. Phys. J. C, 77 1 (2017) 43 Published online: 24 January 2017 DOI: 10.1140/epjc/s10052-017-4596-0