Helpful Links

Reference to IAEA-TECDOC-1363 2003 Guidelines for radioelement mapping using gamma ray spectrometry data.
http://www.iaea.org/OurWork/ST/NE/NEFW/nfcms_rawmaterials_publications.html
Geological Survey of Canada Radiometric Theory.
http://gsc.nrcan.gc.ca/gamma/theory_e.php
Australian Guide to the technical specifications for airborne gamma-ray surveys.
http://www.ga.gov.au/image_cache/GA7667.pdf
Useful link to additional geophysical resources.
http://www.geoexplo.com/Geophysics_links.html