1. in: The Chemical Physics of Solid Surfaces and Heterogeneous Catalysis, Vol. 4, Ed. and , Elsevier Publ. Co., Amsterdam/Oxford/New York 1982.
2. in: Electron and Ion Spectroscopy of Solids, Ed. , and , Plenum Press, New York/London 1978.
3. Primary steps in catalytic synthesis of ammonia
4. , , , and , in: Proc. 8th Congress of Catalysis, Berlin (West) 1984, IV-133.
5. π-BondedN2on Fe(111): The Precursor for Dissociation