Radiation issues, "Guidance For Protective Actions Following A Radiological Terrorist Event". Position statement of the Health Physics Society. January 2004.
http://hps.org/documents/RDDPAGs.pdf

Radiation Issues. Background Information on "Guidance for Protective
Actions Following a Radiological Terrorist Event" Position Statement
of the Health Physics Society. Jan 2004.
http://hps.org/documents/RDDPAGs.Background.pdf