1. Schmierstoffe und verwandte Produkte, Deerfield Beach-Florida, Basel, Verlag Chemie Weinheim, 84 (1982);
2. (English Edition) Lubricants and Related Products, Verlag Chemie Weinheim, 185 (1984)
3. (ed.) Additive fuer Schmierstoffe, Vol. 2 of the series Tribotechnik, Hannover, Curt R. Vincentz Verlag, 161 (1984)
4. GB 1,145,850 (1969); Esso
5. US 3,338,067 (1966);