Publisher Correction to: Theory of field emission - Eur. Phys. J. B (2018) 91: 182, https://doi.org/10.1140/epjb/e2018-90181-xShi-Dong LiangEur. Phys. J. B, 91 12 (2018) 318DOI: https://doi.org/10.1140/epjb/e2018-90673-7