1. Current Concepts for the Validation of Compendial Assays, Pharmacopeial Forum, The United States Pharmacopeia Inc., Rockville, MD, 1986, p. 1241
2. Validation of Compendial Assays – Guidelines, Pharmacopeial Forum, The United States Pharmacopeia Inc., Rockville, MD, 1986, p. 4129
3. Explanatory Note EEC III/844/87-EN-final, August 1989
4. United States Pharmacopeia XXII, General Information <1225>, The United States Pharmacopeia Inc., Rockville, MD, 1990, p. 1710