@book{ internationaliaea, title={Manual on Panoramic Gamma Irradiators (Categories II and IV)}, series={Practical Radiation Safety Manual}, number={8}, year={}, url={http://www.dgdingfa.net/publications/4606/manual-on-panoramic-gamma-irradiators-categories-ii-and-iv}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }