Danielson, Phil (2004). "How To Use Getters and Getter Pumps"(PDF). A Journal of Practical and Useful Vacuum Technology. The Vacuum Lab website. Archived from the original(PDF) on 2005-02-09. Retrieved November 27, 2014.
web.archive.org
Danielson, Phil (2004). "How To Use Getters and Getter Pumps"(PDF). A Journal of Practical and Useful Vacuum Technology. The Vacuum Lab website. Archived from the original(PDF) on 2005-02-09. Retrieved November 27, 2014.