1. The Friction and Lubrication of Solids;Bowden,1950
2. A study of refractory materials for seal and bearing applications in aircraft accessory units and rocket motors;Sibley;WADC Tech. Rept. 58-299 (AD 203787, OTS 151483) from Battelle Memorial Institute,1958
3. Rotating-shaft helium seal investigation;Orcutt,1959
4. Evaluation of designs and materials for high-speed high-temperature shaft seals for turbojet engine applications;Taschenberg;WADC Tech. Rept. 56-267 from Koppers Company, Inc.,1956