Hess, A. K.; McKinney, G. W.; Hendricks, J. S. & Carter, L. L. Verification of the MCNP (TM) Perturbation Correction Feature for Cross-Section Dependent Tallies, report, October 1, 1998; (https://digital.library.unt.edu/ark:/67531/metadc620372/m1/1/: accessed November 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .