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2. Baumeister, H. K., 1963, “Nominal Clearance of the Foil Bearing,” IBM Journal, p. 153.
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4. DIN Standards, 1996, “Determination of Values of Surface Roughness Parameters Ra, Rz, R max. Using Electrical Contact (stylus) Instruments,” DIN 4768.
5. Ducotey, Keith S., 1993, “Traction Between Webs and Rollers in Web Handling Applications,” Ph.D. dissertation, Oklahoma State University.