1. Comité Européen de Normalisation, Foodstuffs. Determination of vitamin A by high performance liquid chromatography. Part I. Measurement of all-trans-retinol and 13-cis-retinol, BS EN 12823-1: 2000.
2. Comité Européen de Normalisation, Foodstuffs. Determination of vitamin E by high performance liquid chromatography. Measurement of alpha-, beta-, gamma- and delta-tocopherols, BS EN 12822: 2000.
3. Comité Européen de Normalisation, Foodstuffs. Determination of vitamin D by high performance liquid chromatography. Measurement of cholecalciferol (D3) and ergocalciferol (D2), BS EN 12821: 2000.
4. Simultaneous determination of vitamins D3, E and K1 and retinyl palmitate in cattle plasma by liquid chromatography with a narrow-bore column
5. Routine clinical determination of carotene, vitamin E, vitamin A, 25-hydroxy vitamin D3 and trans-vitamin K1 in human serum by straight phase HPLC