Effects of backreaction on power-Maxwell holographic superconductors in Gauss–Bonnet gravity Hamid Reza Salahi, Ahmad Sheykhi and Afshin Montakhab Eur. Phys. J. C, 76 10 (2016) 575 Published online: 25 October 2016 DOI: 10.1140/epjc/s10052-016-4441-x