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4. Exterior Ballistics of Rockets;Davis,1958
5. J.J. Buglia, G.R. Young, J.D. Timmons, H.S. Brinkworth, Analytical method of approximating the motion of a spinning vehicle with variable mass and inertia properties acted upon by several disturbing parameters, NASA TR R-110, Langley Research Center, Langley Air Force Base, VA, 1961.