Vynckier, S., Mijnheer, BJ., & Rassow, J. (1985). Scaling Relative Neutron Depth-dose Distributions From One Phantom Material To Another - a Comparison of Experimental and Theoretical Results. Physics in Medicine and Biology, 30(1), 55-66. https://doi.org/10.1088/0031-9155/30/1/006 (Original work published 1985)