1. CONCAWE, The collection, disposal and regeneration of waste oils and related materials. Report 85/53, CONCAWE, The Hague, 1985.
2. Environmental impact of used motor oil;Vazquiez-Duhalt;Sci. Total Environ.,1989
3. A correlation of the biodegradability of oil products in the CEC-L-33-T-82 and modified Sturmtests;Battersby;Chemosphere,1992
4. Novick, N. J., Mehta, P. G. and McGoldrick, P. B., Assessment of the biodegradability of mineral oils and synthetic ester base stocks, using CO2 ultimate biodegradability tests and CEC-L-33-T-82. Proceedings of CEC, Fourth International Symposium on the Performance Evaluation of Automotive Fuels and Lubricants, 5–7 May 1993, Birmingham, U.K., paper no. CEC/93/EL28.
5. Lube oil additives;Garcia-Borras;Chemtech,1986