Cronk, Peter J. and Kristen Cronk. "Adhesively Applied External Nasal Strips and Dilators Containing Medications and Fragrances." U.S. Patent number 7013889. Washington DC: United States Patent and Trademark Office, 2006.

Cronk, Peter J. and Kristen Cronk. "Adhesively Applied External Nasal Strips and Dilators Containing Medications and Fragrances." U.S. Patent number 7013889. Washington DC: United States Patent and Trademark Office, 2006.