1. LEED Studies of the (0001) Face of α‐Alumina
2. 2. C. C. Chang, and G. A. Somorjai , "LEED Studies of Thin Film Silicon Overgrowths on -Alumina"; p. 77 in Proceedings of the Conference on the Structure and Chemistry of Solid Surfaces. Wiley. New York, 1969 .
3. 3. J. M. Charig, D. K. Skinner, and G. A. Somorjai , "The (0001) Surface of -Alumina LEED Observations" p. 34 in Proceedings of the Conference on the Structure md Chemistry of Solid Surfaces. Wiley, New York, 1969 .
4. Composition and surface structure of the (0001) face of .alpha.-alumina by low-energy electron diffraction
5. Structure of solid surfaces