1. Aschaffenburg R, Mullen JE (1949) A rapid and simple phosphatase test for milk. J Dairy Res 16:58–67
2. EU (2002) Commission decision of 12th August, 2002 implementing council directives 96/23/EC concerning the performance of analytical method and interpretation of results. Off J European Commu L221/8
3. ICH (2005) ICH harmonized tripartite guidelines on validation of analytical procedures: text and methodology Q2(R1) Ministry of Health, Canada https://database.ich.org/sites/default/files/Q2%28R1%29%20Guideline.pdf Assessed on 22 August 2020
4. IS (2003) Method for determination of phosphatase activity in milk and milk products. IS: 8479 (Part 1) – 2003. Bureau of Indian Standards, New Delhi, India
5. ISO (2007) Milk and milk products- determination of alkaline phosphatase activity. Part I: fluorimetric method for milk and milk based drinks ISO 11816-1 IDF 155–1, 2nd Edn, International Organization for Standardization, Switzerland