Macro-coherent radiative emission of neutrino pair between parity-even atomic statesM. Tashiro, B. P. Das, J. Ekman, P. Jönsson, N. Sasao and M. YoshimuraEur. Phys. J. C, 79 11 (2019) 907DOI: https://doi.org/10.1140/epjc/s10052-019-7430-z