1Monyem A.The effect of biodiesel oxidation on engine performance and emissions [D].PhD dissertation,Ames:IOWA STATE UNIVERSITY,Iowa,USA,1998.
2W.Rodinger.Ecotoxicological risks of biodiesel compared with diesel based on mineral oil.International Conference on Standardization and Analysis of Biodiesel.Vienna,6th Nov.1995.
3Klaus scharmer.Biodiesel:energy and environmental evaluation.Union zur Forderung von Ole und proteinpflanzen e.V.Nov.2001.
4NEWS National Biodiesel Board,ASTM Issues Biodiesel Fuel Standard [online],USA,to be found at《http://www.biodiesel.org/pdf-files/ASTM-Spec-02.pdf》[quoted on 22.07.2002].
5Directive 92/81 EEC of the Council on 19th October 1992 on the harmonization of the structure of consumption taxes on mineral oil,Der.L 316 dated 31.10.1992.
