@book{
  international2020iaea,
  title={Industrial Applications of Sealed Radioactive Sources},
  series={TECDOC Series},
  number={1925},
  year={2020},
  isbn={978-92-0-117020-0},
  url={https://www.iaea.org/publications/12220/industrial-applications-of-sealed-radioactive-sources},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}