1. G. Knothe, J. Van Gerpen, and J. Krahl, The Biodiesel Handbook (AOCS, Champaign, 2005).
2. V. Mittelbach and C. Remschmidt, Biodiesel—The Comprehensive Handbook (2004).
3. Standard EN 14214. Requirement and Test Methods (2003).
4. Standard EN 590. Requirement and Test Methods (2004).
5. Eurorachem Guide. A Laboratory Guide to Method Validation and Related Topics (1998).