1. IDF: Dried milk, dried ice-mixes and processed cheese-determination of lactose content-Part 1: Enzymatic method utilizing the glucose moiety of the lactose. IDF 79-1. Brussels, Belgium: International Dairy Federation (2002)
2. IDF: Milk products and milk-based foods-determination of fat content by the Weibull-Berntrop gravimetric method (Reference method)-Part 1: Infant foods. IDF 124-1. Brussels, Belgium: International Dairy Federation (2005)
3. IDF: Milk and milk products-determination of lactose content by high-performance liquid chromatography (Reference method). IDF 198. Brussels, Belgium: International Dairy Federation (2007)
4. IDF: Milk-determination of fat content. IDF 226. Brussels, Belgium: International Dairy Federation (2008)
5. IDF: Milk and milk products-determination of nitrogen content-Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method). IDF 20-4. Brussels, Belgium: International Dairy Federation (2016)