Dirac equation of spin particles and tunneling radiation from a Kinnersly black hole Guo-Ping Li, Zhong-Wen Feng, Hui-Ling Li and Xiao-Tao Zu Eur. Phys. J. C, 77 4 (2017) 250 Published online: 19 April 2017 DOI: 10.1140/epjc/s10052-017-4806-9