1. Gallium & Gallium Arsenide: Supply, Technology and Uses;Kramer;Bureau of Mines Information Circular 9208,1988
2. Gallium Arsenide - from Mine to Microcircuit;Grant;Trans. IMM Section C,1988
3. Gallium, A Chapter from Mineral Facts and Problems;Petkof;Bureau of Mines, Preprint from Bulletin 675,1985
4. The Recovery of Gallium from Bayer Process Aluminate Solutions by Liquid-Liquid Extraction;Leveque,1979
5. The Recovery of Gallium from Bayer Process Aluminate Solutions by Liquid-Liquid Extraction;Leveque,1979