1. Review of Power Cylinder Friction for Diesel Engines
2. Engine oils for Euro 4 engines and beyond — need for low sulphur, phosphorus and sulphated ash, 14th Intern. Colloq. Tribology, Esslingen, January 2004, pp. 37.
3. PAO based synthetic lubricants in industrial application, 13th Intern. Colloq. Tribology, Esslingen, January 2002.
4. The mineral oil industry in Japan, 13th Intern. Colloq. Tribology, Esslingen, January 2002, pp. 13.
5. PAO base oils reduce fuel and energy consumption, 14th Intern. Colloq. Tribology, January 2004, pp. 1561.