1. G.A. Somorjai,Chemistry in Two Dimensions: Surfaces (Cornell Univ. Press, Ithaca, 1981).
2. G. Ertl, in:Catalysis, Vol. 4, eds. J.R. Anderson and M. Boudart (Springer, New York, 1983) ch. 3; Ang. Chem. 202 (1990) 1258.
3. D.A. King and D.P. Woudruff, eds.,The Chemical Physics of Solid Surfaces and Heterogeneous Catalysis, Vols. 1?5 (Elsevier, Amsterdam, 1981?1988).
4. R. Hoffmann,Solids and Surfaces, A Chemist's View of Bonding in Extended Structures (VCN, 1988).
5. E. Shustorovich, Adv. Catal. 37 (1990) 101.