1. Boundary Lubrication, An Appraisal of World Literature,1969
2. Interdisciplinary Approach to the Lubrication of Concentrated Contacts,1970
3. Results of the 2nd meeting of the International Research Group (I.R.G.) on wear of engineering materials;Salomon,1972
4. Investigations into film failure (transition point) of lubricated concentrated contacts;Czichos;Wear,1972
5. H. Czichos, Failure criteria in thin film lubrication: the concept of a failure surface, Tribology, to be published.