1. A.Y. Cho, J.R. Arthur, Progress in Solid-State Chemistry, edited by G. Somorjai and J. McCaldin (Pergammon, New York, 1975 ) Vol. 10, p. 157.
2. A.Y. Cho, J. Vac. Sci. Technol. 16, 275 (1979).
3. K. Ploog, Crystal Growth, Properties, and Applications, edited by H.C. Freyhardt (Spring-Verlag, Berlin Heidelberg, 1980 ) Vol. 3, p. 73.
4. K. Ploog, Am. Rev. Mater. Sci. 11, 171 (1981).
5. L.L. Chang, R. Ludeke, Epitaxial Growth, ed J.W. Mathews (Academic New York, 1975 ) p. 37.