Organ and Effective Dose Coefficients for Cranial and Caudal Irradiation Geometries: NeutronsK.G. Veinot, K.F. Eckerman, N.E. Hertel and M.M. HillerEPJ Web Conf., 153 (2017) 01009DOI: https://doi.org/10.1051/epjconf/201715301009