1. Forward, F.A., Veltman, H.: Direct leaching of zinc sulphide concentrate by Sherrit Gordon. J. Met. 11, 836–840 (1959)
2. Parker, E.G.: Oxidative pressure leaching of zinc concentrate. CIM Bull. 74(5), 145–150 (1961)
3. Demopoulos, G.P., Baldwin, S.: Stoichiometric and kinetic aspects on the pressure leaching of zinc concentrates. In: Mishra, B. (ed.) TMS Annual Meeting, San Diego, pp. 567–583 (1999)
4. Bjorling, G.: Lixiviation of sulphidic minerals under oxygen pressure. Metallurgie 8, 781–784 (1954)
5. Mizoguchi, T., Habashi, F.: The aqueous oxidation of complex sulfide concentrates in hydrochloric acid. Int. J. Miner. Process. 8, 177–193 (1981)