@book{
  internationaliaea,
  title={Low Background High Efficiency Geiger-mueller Counter},
  series={Technical Reports Series},
  number={33},
  year={},
  isbn={92-0-135064-3},
  url={https://www.iaea.org/publications/1128/low-background-high-efficiency-geiger-mueller-counter},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}