DeSteese, J.G.; Dagle, J.E. & Dirks, J.A. High-temperature superconducting transformer evaluation, article, April 1, 1995; (https://digital.library.unt.edu/ark:/67531/metadc777024/m1/1/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .