@book{
  international1978iaea,
  title={Isotopes in Biological Dinitrogen Fixation},
  series={Panel Proceedings Series},
  year={1978},
  isbn={92-0-011078-9},
  url={https://www.iaea.org/publications/3289/isotopes-in-biological-dinitrogen-fixation},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}