1. AOCS Official Method 1997 Determination of chlorophyll-related pigments in oil (AOCS Method Cc 13d-55)
2. Sensory assessment of virgin rapeseed oils;Brühl;European Journal of Lipid Science and Technology,2008
3. BSI 1977 Methods of analysis of fats and fatty oils
4. CODEX STAN 1999 Codex standard for named vegetable oil. Codex Alimentarius