TY - RPRT TI - New Methods For Generating Gear Surfaces AU - Coy, John J. AU - Handschuh, Robert F. AU - Litvin, F. L. AU - Tsung, W.-J. AU - Tsay, C.-B. P. PY - 1989 UR - https://ntrs.nasa.gov/citations/19890000030 ID - 19890000030 ER -