1. Public Law 114-114 Microbead-Free Waters Act of 2015 2015 https://www.congress.gov/114/plaws/publ114/PLAW-114publ114.pdf
2. US Department of Health and Human Services Food and Drug Administration 21 CFR Parts 201 and 310 Labeling and Effectiveness Testing 35620 35665 https://www.regulations.gov/document?D=FDA-1978-N-0018-0698
3. In vitro assessment of the broad-spectrum ultraviolet protection of sunscreen products;Diffey;J Am Acad Dermatol,2000
4. Prevalence and costs of skin cancer treatment in the U.S., 2002-2006 and 2007-2011;Guy;Am J Prev Med,2015
5. National Cancer Institute Cancer Trends Progress Report Sun-Protective Behavior 2017 https://progressreport.cancer.gov/prevention/sun_protection