1. Lubrication and lubricants, a treatise andpractice of lubrication, London;Archbutt,1900
2. Tribology, lubricants and lubrication engineering – a review;Bartz;Wear,1978
3. The tribology of wheel on rail;Barwell;Tribology,1974
4. Soft-tribology: Lubrication in a compliant pdms-pdms contact;Bongaerts;Tribology International,2007
5. The lubricating properties of human whole saliva;Bongaerts;Tribology Letters,2007