Rasnick, W. H.; Arehart, T. A.; Littleton, D. E. & Steger, P. J.Porous graphite air-bearing components as applied to machine tools,
article,
January 1, 1974;
Tennessee.
(https://gateway.okhistory.org/ark:/67531/metadc1055862/:
accessed July 15, 2024),
The Gateway to Oklahoma History, https://gateway.okhistory.org;
crediting UNT Libraries Government Documents Department.