1. http://www.accessexcellence.org/AE/AEC/CC/historical_background.html
2. http://www.physics.isu.edu/radinf/chrono.htm
3. Ross Mullner. Deadly Glow. The Radium Dial Worker Tragedy. American Public Health Association, Washington, DC, 1989.
4. http://www.radford.edu/
∼wkovarik/envhist/radium.html
5. http://www.orau.org/ptp/articlesstories/quackstory.htm