1. G.R. Kotler, D.L. Hawke, E.N. Aqua, in: Proceedings of the Annual Meeting on International Magnesium Association, vol. 33, 1976, pp. 45–48.
2. Y. Hirasawa, K. Uehori, in: Proceedings of the 46th Annual World Magnesium Conference, Dearborn, MI, USA, 16–19 May, Int. Magnesium Assoc., 1989, pp. 58–62.