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2. King, G. W. (1972). “Development of Wire-Drawing Processes for Refractory-Metal Fibers.” NASA CR-120925.
3. Petrasek, D. W. (1972). “High-Temperature Strength of Refractory-Metal Wires and Consideration for Composite Applications.” NASA TN D-6881.
4. Petrasek, D. W., and Signorelli, R. A. (1969). “Stress-Rupture and Tensile Properties of Refractory-Metal Wires at 2000 and 2200°F (1093 and 204°C).” NASA TN D-5139.
5. Petrasek, D. W., and Weeton, J. W. (1963). “Alloying Effect on Tensile Properties and Micro-Structure of Tungsten-Fiber-Reinforced Composites.” NASA TN D-1568.