1. Av. Week and Space Tech. (January 28,1991), pp. 48–51.
2. J.L. Smialek, F.A. Archer, and R.G. Garlick, “The Chemistry of Saudi Arabian Sand: A Deposition Problem on Helicopter Turbine Airfoils,” Advances in Synthesis and Processes, 3, ed. F.H. Froes et al. (Covina, CA: SAMPE, 1992), pp. M63–M77; (see also NASA TM 105234, July, 1991).
3. Av. Week and Space Tech. (March 4,1991), pp. 20–22.
4. G.B. Besse and K.B. Kohl, Characterization of Conus and Saudi Arabian Vine-Grained Soil Samples, BFLRF Interim Report No. 294, DMK70-92-C-0059 (1993).
5. F.H. Stott, DJ. de Wet, and R. Taylor, “The Effects of Molten Silicate Deposits on the Stability of Thermal Barrier Coatings for Turbine Applications at Very High Temperatures,” in Ref. 2, pp. M92–M101.