1. 21 CFR § 314.3(b)(2022).CFR – Code of Federal Regulations Title 21 21 CFR § 314.3(b) https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=314.3(6 January 2022).
2. 21 Largest Generic Drug Companies(n.d.).https://finance.yahoo.com/news/21‐largest‐generic‐drug‐companies‐185756541.html.
3. Approved Drug Products with Therapeutic Equivalence Evaluations(2020).40th Edition U.S. Department of Health and Human Services Food and Drug Administration Office of Medical Products and Tobacco Center for Drug and Food Evaluation and Research Office of Generic Drugs Office of Generic Policy.
4. Barr‐833‐5‐373(n.d.).https://www.drugs.com/imprints/barr‐833‐5‐373.html(Courtesy of Jeff Harrison ofDrug.com).
5. Development of the generic drug industry in the US after the Hatch-Waxman Act of 1984