Kunz, C; Lönnerdal, B (1990). ”Human-milk proteins: analysis of casein and casein subunits by anion-exchange chromatography, gel electrophoresis, and specific staining methods”. Am. J. Clin. Nutr. 51 (1): sid. 37–46. doi:10.1093/ajcn/51.1.37. PMID 1688683.
Kunz, C; Lönnerdal, B (1990). ”Human-milk proteins: analysis of casein and casein subunits by anion-exchange chromatography, gel electrophoresis, and specific staining methods”. Am. J. Clin. Nutr. 51 (1): sid. 37–46. doi:10.1093/ajcn/51.1.37. PMID 1688683.