Enhancing sensitivity to leptonic CP violation using complementarity among DUNE, T2HK, and T2HKK Sanjib Kumar Agarwalla, Sudipta Das, Alessio Giarnetti, Davide Meloni and Masoom Singh Eur. Phys. J. C, 83 8 (2023) 694 Published online: 05 August 2023 DOI: 10.1140/epjc/s10052-023-11863-7