1. Smoke detectors and americium-241 fact sheet, Canadian Nuclear Society, http://www.cns-snc.ca/cns/education-communications.
2. The Complex World of Plutonium Science
3. B.C. Blanke, J.H., Birden, K.C. Jordan, E.L. Murphy, Nuclear-battery-thermocouple type summary report, AEC Research and Development Report, Monsanto Research Corporation, US Atomic Energy Commission, MML-1127, 1962.
4. Nuclear Energy Institute, Nuclear shares of electricity generation, http://www.world-nuclear.org/info/nshare.html.