Forest, J.L.; Pandharipande, V.R.; Carlson, J. & Schiavilla, R. Variational Monte Carlo Calculations of {sup 3}He and {sup 4}He with a Relativistic Hamiltonian - II, article, October 1, 1994; (https://digital.library.unt.edu/ark:/67531/metadc715519/m1/4/: accessed December 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .