IMAGE- American Mathematical Society obituaries for Patrick C. Fischer and Frank Birtel published Sept. 8, 2011

For Fischer's fellow database enthusiast Codd, see Cross-Referenced (April 24, 2003).

For Birtel's fellow pseudoscience enthusiast Frank Tipler, see the artist's comment linked to in Romancing the Omega (April 19, 2011)—

"Omega Point" is a term used by mathematical physicist Frank Tipler for what he maintains is the ultimate fate of the universe required by the laws of physics."

— Josefine Lyche, 2009