Sudibyo, S., Hermida, L. and Reswari, P. A. (2021) “Optimization of Electrometal - Electrowinning Cobalt Process from the Slag of Nickel Pig Iron (NPI)”, Indochina Applied Scienceห, 10(2), pp. 49–57. doi: 10.55674/ias.v10i2.242741.