1. Mineralisations plombo—zincifères belges, minéralogie - gitologie - minéralurgie;Dimanche;Ann. Soc. Geol. Belg.,1979
2. Quick leach of siliceous zinc ores;Dufresne;J. Met.,1976
3. The processing of zinc silicate ores;Matthew,1977
4. Acid dissolution of willemite and hemimorphite;Terry;Met. Trans. B,1983
5. Kinetics of acid leaching of zinc oxide;Monhemius,1984