Rasey, J.S. and Nelson, N.J. 1977. Effect of Roentgen, Cyclotron Neutron, or Mixed Neutron-Photon Fractionated Irradiation of Mice: LD50/4 day values. Acta Oncologica. 16, 6 (Jan. 1977), 525–528. DOI:https://doi.org/10.3109/02841867709133974.