Determination of vitamin A and vitamin E esters in infant formulae and fortified milk powders by HPLC: Use of internal standardisation

The Horwitz Ratio (HorRat): A Useful Index of Method Performance with Respect to Precision

William Horwitz, Richard H Albert · Journal of AOAC International · 2006 · 601 citations · Full text

Natural Sciences, Chemistry, Food Science +14

A method for determining concentrations of retinol, tocopherol, and five carotenoids in human plasma and tissue samples

DW Nierenberg, SL Nann · American Journal of Clinical Nutrition · 1992 · 246 citations

Life Sciences, Biochemistry, Nutritional Sciences +12

Liquid chromatographic method for the determination of carotenoids, retinoids and tocopherols in human serum and in food

Katherine S. Epler, Regina G. Ziegler, Neal E. Craft · Journal of Chromatography B Biomedical Sciences and Applications · 1993 · 193 citations

Agriculture, Biochemistry, Nutritional Sciences +13

Thermostable alkaline proteases of Bacillus licheniformis MIR 29: isolation, production and characterization

Marcela A. Ferrero, Guillermo R. Castro, C Abate et al. · Applied Microbiology and Biotechnology · 1996 · 171 citations

Life Sciences, Biochemistry, Microbiology +13

Evaluating assay precision.

Douglas Chesher · PubMed · 2008 · 149 citations

Pharmacy, Pharmaceutical Analysis, Good Laboratory Practice +16