@book{ international1968iaea, title={Neutron Thermalization and Reactor Spectra (Ann Arbor, 17-21 July 1967)}, series={Proceedings Series}, year={1968}, isbn={92-0-050168-0}, url={http://www.dgdingfa.net/publications/2117/neutron-thermalization-and-reactor-spectra-ann-arbor-17-21-july-1967}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }