How (not) to renormalize integral equations with singular potentials in effective field theory E. Epelbaum, A. M. Gasparyan, J. Gegelia and Ulf-G. Meißner Eur. Phys. J. A, 54 11 (2018) 186 Published online: 02 November 2018 DOI: 10.1140/epja/i2018-12632-1