@book{
      international1986iaea,
      title={Gamma, X ray and Neutron Techniques for the Coal Industry},
      author={ },
      series={entity},
      number={ },
      year={1986},
      isbn={92-0-161086-6 },
      url={/publications/3561/gamma-x-ray-and-neutron-techniques-for-the-coal-industry },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }