1. IAEA. 1981. “Stable isotope hydrology: deuterium and oxygen-18 in the water cycle”. Vienna: IAEA. Technical Reports Series no. 210
2. IAEA. 2005. “Isotope hydrology information system. The ISOHIS database”. Available online at:http://isohis.iaea.org/accessed 27 October
3. IAEA. 1994. “Environmental Isotope Data no. 10: World Survey of Isotope Concentration in Precipitation (1988–1991)”. Vienna: IAEA. Technical Report Series no. 371. and previous volumes