1. Used Motor Oil—Collection and Recycling;American Petroleum Institute (API),2010
2. Agency for Toxic Substances and Disease Registry. Toxicological Profile for used Mineral-based Crankcase Oil;ATSDR,1997
3. Environmental assessment of used oil management methods;Boughton;Environ. Sci. Technol.,2004
4. Comprehensive Product Stewardship System (CPSS) for Waste Oil—Discussion Paper;CPSS,1999
5. UK, Canada lead in used oil collection;DeMarco,2005