How (not) to renormalize integral equations with singular potentials in effective field theoryE. Epelbaum, A. M. Gasparyan, J. Gegelia and Ulf-G. MeißnerEur. Phys. J. A, 54 11 (2018) 186DOI: https://doi.org/10.1140/epja/i2018-12632-1