1. G. Oesterheld, et al.: Uber die hegierungen des Berylliums mit Aluminium, Kupfer, Silber, and Eisen, Zeit, fur Anorganische Chem., vol. 97, no. 1, 1916.
2. H. Misch, et. al.: Strukturen intermetallischer Verbindungen des Berylliums mit Eisen, Zeit, fur Physik. Chem., vol. 29, no. 42, 1935.
3. G. P. Chatterjee and S. S. Sidhlue: An X-ray Diffraction Study of the Gold-Beryllium Alloy System, Phys. Rev., vol. 76, no. 1, 1949, p. 175.
4. N. C. Baenziger and R. E. Rundle: The MBe13 Compounds, Acta Cryst., vol. 2, 1949, p. 258.
5. R. M. Paine, A. J. Stonehouse, and W. W. Beaver: An Investigation of Intermetallic Compounds for Very High Temperature Applications, The Brush Beryllium Co., Feb. 1959. WADC Tech. Report 59-29, Parts I and II.