1. , , , and , ‘Effects of aging on frictional properties of fuel efficient engine oils’, SAE Technical Paper 952532 (1995).
2. , and , ‘Additive interactions and depletion processes in fuel efficient engine oils’, SAE Technical Paper 971694 (1997).
3. , , , , , , and , ‘Lubricant technology to enhance the durability of low friction performance of gasoline engine oils’, SAE Technical Paper 952533 (1995).
4. and , ‘Analysis of ligand-exchange reaction among sulfur containing complexes’, Prepr. JAST Tribology Meeting, Fukuoka, October 1991, pp. 673–6.
5. , and , ‘Metal ion exchange reactions between copper carboxylates and sulfur containing metal complexes’, Proc. JAST Int. Trib. Conf., Yokohama, 1995, pp. 715–20.