1. J. DeMasi, K. D. Sheffler, and M. Ortiz, NASA CR 182230, Pratt & Whitney (1989).
2. R. V. Hillery and B. H. Pilsner, NASA CR 179504, General Electric Company (1986).
3. T. E. Strangmen, J. Neumann, and A. Liu, NASA CR 179507, Garrett Turbine Engine Company (1986).
4. S. M. Meier, D. M. Nissley, and K. D. Sheffler, NASA CR 189111, Pratt & Whitney (1991).
5. Degradation Mechanisms of ZrO2-8 wt% Y2O3/Ni-22Cr-10Al-1Y Thermal Barrier Coatings