1. P. Heilmann, E. Lang, K. Heinz, K. Müller: Appl. Phys. 9, 247 (1976)
2. P. Heilmann, E. Lang, K. Heinz, K. Müller: The Necessity for fast LEED Intensity Measurements, in Proc. Conf. Determination of Surface Structure by LEED, Yorktown Heights (1980)
3. K. Heinz, K. Müller: LEED Intensities —Experimental Progress and New Possibilities in Surface Structure Determination, in Springer Tracts in Mod. Phys., Vol.91, (Springer, Berlin, Heidelberg, New York 1982) pp.1–53
4. E. Lang, K. Müller, K. Heinz, M.A. Van Hove, R.J. Koestner, G.A. Somorjai: Surf. Sci. 127, 347 (1983)
5. M.A. Stevens, G.J. Russell: Surf. Sci. 104, 354 (1981)