Sundberg, G.J. Analytical and Experimental Evaluation of Joining Silicon Carbide to Silicon Carbide and Silicon Nitride to Silicon Nitride for Advanced Heat Engine Applications Phase II, report, January 1, 1994; (https://digital.library.unt.edu/ark:/67531/metadc736858/m1/1/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .