1. Reference tables for the intrasubject coefficient of variation in bioequivalence studies;Steinijans;International Journal of Clinical Pharmacology and Therapeutics,1995
2. Committee for Medicinal Products for Human Use (CHMP) http://www.ema.europa.eu/docs/en_GB/document_library/Scientific_guideline/2010/01/WC500070039.pdf
3. Health Canada http://www.hc-sc.gc.ca/dhp-mps/alt_formats/pdf/prodpharma/applic-demande/guide-ld/bio/gd_cbs_ebc_ld-eng.pdf
4. Group sequential methods in the design and analysis of clinical trials;Pocock;Biometrika,1977
5. Sequential design approaches for bioequivalence studies with crossover designs;Potvin;Pharmaceutical Statistics,2008