https://www.scirp.org/reference/ReferencesPapers?ReferenceID=2550855
Jackson, A.J., Robbie, G. and Marroum, P. (2004) Metabolites and Bioequivalence Past and Present....
Jackson, A.J., Robbie, G. and Marroum, P. (2004) Metabolites and Bioequivalence Past and Present. Clinical Pharmacokinetics, 43, 655-672.