1. ^oldstein, S.(ed.),Modern Developments in Fluid Dynamics, Vol.1, Clarendon Press, Oxford, England, UK, 1938, pp.62, 63.
2. 2Kegelman, J. T., Nelson, R. C, and Mueller, T. J. "Boundary Layer and Side Force Characteristics of a Spinning Axisymmetric Body," AIAA Paper 80-1584, Aug. 1980.