NF M60-790-8:1999 Nuclear energy. Measurement of radioactivity in the environment-Soil. Part 8 : methodology for plutonium 238 and plutonium 239 plus 240 activity measurement in soil samples.
2009NF M60-790-4:2009 Measurements of radioactivity in the environment - Soil - Part 4 : measurement of plutonium isotopes (plutonium 238 and plutonium 239 + 240) by alpha spectrometry.
1999NF M60-790-8:1999 Nuclear energy. Measurement of radioactivity in the environment-Soil. Part 8 : methodology for plutonium 238 and plutonium 239 plus 240 activity measurement in soil samples.