1. R.J. Gehrke, R.P. Keegan, P.J. Taylor, Specifications for Today’s Coaxial HPGe Detectors, 2001 ANS Annual Meeting, Milwaukee, WI
2. R.L. Metzger, private communication, see also: R.L. Metzger, K.A. Van Riper, K.J. Kearfott, Radionuclide Depth Distribution by Collimated Spectroscopy, 2002 ANS Topical Meeting, Santa Fe, NM
3. ORTEC Detector Catalogue, 2002, p. 66