[6]Arhivirana inačica izvorne stranice od 1. lipnja 2006. (Wayback Machine) "Earth Science FAQ: Where can I find information about the ozone hole and ozone depletion?" Goddard Space Flight Center, National Aeronautics and Space Administration, 2008.
nejm.org
content.nejm.org
Jerrett Michael, Burnett Richard T. and Pope C. Arden, III and Ito, Kazuhiko and Thurston, George and Krewski, Daniel and Shi, Yuanli and Calle, Eugenia and Thun, Michael, journal = N. Engl. J. Med., 2009., "Long-Term Ozone Exposure and Mortality" = 10.1056/NEJMoa0803894|pmid = 19279340
[6]Arhivirana inačica izvorne stranice od 1. lipnja 2006. (Wayback Machine) "Earth Science FAQ: Where can I find information about the ozone hole and ozone depletion?" Goddard Space Flight Center, National Aeronautics and Space Administration, 2008.