Peter L. Christiansen, Jens Juul Rasmussen, and Mads Peter Sørensen, Scattering by singular potentials in coupled Schrödinger equations, Low Temp. Phys. 48, 1033–1037, (2022) [Fiz. Nyzk. Temp. 48, 1169–1174, (2022)] DOI: https://doi.org/10.1063/10.0015112.