Charged cylindrical polytropes with generalized polytropic equation of state M. Azam, S. A. Mardan, I. Noureen and M. A. Rehman Eur. Phys. J. C, 76 9 (2016) 510 Published online: 17 September 2016 DOI: 10.1140/epjc/s10052-016-4358-4