1. Intercomparison of radionuclide measurements in marine sediment sample IAEA-306;Ballestra;International Laboratory of Marine Radioactivity Report No. IAEA/AL/013,1989
2. Phosphates and Phosphoric Acid—Raw Materials, Technology, and Economies of the Wet Process;Becker,1984
3. Release of radium and other decay-series isotopes from Florida phosphate rock;Burnett;Florida Institute of Phosphate Research Report No. 05-016-059,1988
4. Maintaining low detector backgrounds in alpha spectrometry;Burnett,1994
5. Radionuclides in phosphogypsum: migration and bacterial control (abs);Burnett,1993