1. Nature of the chemisorption bond on semiconductor surfaces
2. and , Proc. 7th Internat. Vac. Congr. and 3rd Internat. Conf. Solid Surfaces, Vienna, September 1977, Austrian Vacuum Society 1977 (p. 521).
3. Proc. 7th Internat. Symp. Electronic Structure of Metals and Alloys, Gaussig, April 1977, Technical University Dresden, to be published.
4. Surface Sci., to be published.
5. Role of the self-consistency in the evaluation of the electronic structure of transition metal surfaces