1. Dunmore, S. (2002). Lost Subs (pp. 138–139, 140–151). Da Capo/Madison Press, Toronto, Canada.
2. Anon. (1999). Submarines, secrets and spies. PBS.
3. Anon. Three mile island accident, 1/7/1013.
http://en.wikipedia.org/Three_Mile_Island_accident
. p. 18.
4. Walker, S. J. (2004). Three mile island. Berkeley, CA: University of CA Press.
5. Anon. (1994). Swagelok Catalogue MS-01-14, Willoughby, OH 44094.