Johnson, K.I.; Khaleel, M.A.; Lavender, C.A. & Smith, M.T. Accuracy issues in modeling superplastic metal forming, report, February 1, 1995; (https://digital.library.unt.edu/ark:/67531/metadc683799/m1/1/: accessed April 23, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .