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2. AOCS, 1998a, "Method Cd 1‐25: Iodine value of fats and oils. Wijs Method", Official Methods and Recommended Practices of the American Oil Chemists' Society.
3. AOCS, 1998b, "AOCS official method Ca 5a–40: Free fatty acids. Official methods and recommended practices of the American Oil Chemists’ Society".
4. AOCS, 1998c, "Method Cd 12b‐92", Official Methods and Recommended Practices of the American Oil Chemists' Society.
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