Coordinate space representation for renormalization of quantum electrodynamics Amirhosein Mojavezi, Reza Moazzemi and Mohammad Ebrahim Zomorrodian Eur. Phys. J. Plus, 136 2 (2021) 200 Published online: 11 February 2021 DOI: 10.1140/epjp/s13360-020-01051-x