Measuring the sterile neutrino CP phase at DUNE and T2HK Sandhya Choubey, Debajyoti Dutta and Dipyaman Pramanik Eur. Phys. J. C, 78 4 (2018) 339 Published online: 26 April 2018 DOI: 10.1140/epjc/s10052-018-5816-y