Searching for non-unitary neutrino oscillations in the present T2K and NOA data Luis Salvador Miranda, Pedro Pasquini, Ushak Rahaman and Soebur Razzaque Eur. Phys. J. C, 81 5 (2021) 444 Published online: 24 May 2021 DOI: 10.1140/epjc/s10052-021-09227-0