1. 105th U.S. Congress. 1997. H.R.1411: Food and Drug Administration Regulatory Modernization Act of 1997. Library of Congress.
2. 114th United States Congress. 2016. H.R. 34: 21st Century Cures Act. Library of Congress.
3. Approval of Respiratory Protective Devices. 1995. 42 C.F.R. Part. 84.