B.  Busupalli, Battu, S., Haram, S. K., and Prasad, B. L. V., ?In situ electrochemical transformation of Ni3S2 and Ni3S2-Ni from sheets to nanodisks: towards efficient electrocatalysis for hydrogen evolution reaction (HER)?, Chemistryselect, vol. 1, no. 21, pp. 6708-6712, 2016.