@book{
  international1968iaea,
  title={Radioisotopes in the Pulp and Paper Industry},
  series={Panel Proceedings Series},
  year={1968},
  isbn={92-0-161068-8},
  url={https://www.iaea.org/publications/2175/radioisotopes-in-the-pulp-and-paper-industry},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}