Anderson, J. T.; Carlson, R. V.; Goldman, A. M. & Tan, H. Pair-Field Susceptibility of Superconductors., report, January 1, 1972; (https://digital.library.unt.edu/ark:/67531/metadc1034000/m1/1/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .