1. See, for example, G. G. Libowitz, The Solid State Chemistry of Binary Hydrides, W. A. Benjamin, Inc., New York (1965), pp. 78–80. Numerous references to the original publications are provided in this monograph.
2. W. E. Wallace and S. K. Malik, Structure and Bonding of Metal Hydrides, this conference.
3. The Crystal Structure of Some Rare Earth Hydrides