1. Reviewer guidance: validation of chromatographic methods,1994
2. DTU Food National Food Institute – Technical University of Denmark (DTU). (2009). Danish food composition database. Available from http://www.foodcomp.dk/v7/fcdb_default.asp. Accessed 16.01.13.
3. Reference materials: terminology and use. Can’t one see the forest for the trees?;Emons;Trends in Analytical Chemistry,2004
4. FAPAS (Food Analysis Performance Assessment Scheme). (2009). Vitamin C in orange juice. Available from http://www.fapas.com/proficiency-testing-schemes/. Accessed 10.01.13.
5. FAPAS (Food Analysis Performance Assessment Scheme). (2011). Vitamin C in fruit purée. Available from http://www.fapas.com/proficiency-testing-schemes/. Accessed 10.01.13.