Inflation, (p)reheating and neutrino anomalies: production of sterile neutrinos with secret interactionsArnab Paul, Anish Ghoshal, Arindam Chatterjee and Supratik PalEur. Phys. J. C, 79 10 (2019) 818DOI: https://doi.org/10.1140/epjc/s10052-019-7348-5