1. Naturally occurring vitamin D3 in fish products analysed by HPLC, using vitamin D2 as an internal standard;Egaas;Int. J. Vit. Nutr. Res,1979
2. Relationship of the vitamin D intake of hens to the antirachitic potency of the eggs produced;Guerrant;J. Nutr,1935
3. High-performance liquid chromatographic determination of vitamin D3 in foods with particular reference to eggs;Jackson;Analyst,1982
4. Determination of vitamin D3 in margarines, oils and other supplemented food products using HPLC;Johnsson;Int. J. Vit. Nutr. Res,1989
5. High performance liquid chromatographic determination of cholecalsiferol (vitamin D3) in food—A comparison with a bioassay method;Johnsson;Int. J. Vit. Nutr. Res,1987