1. R.A. Wasko, Experimental investigation of stage separation aerodynamics, NASA Technical Note (NASA-TND-868), National Aeronautics and Space Administration, Washington, DC, May 1961.
2. W. Chubb, The collision boundary between the two separating stages of the SA-4 Saturn Vehicles, NASA Technical Note (NASA-TND-598), National Aeronautics and Space Administration, Washington, DC, August 1961.
3. Coning effects caused by separation of spin stabilized stages;Dwork;AIAA Journal,1963
4. Comments on coning effects caused by separation of spin stabilized stages;Wilke;AIAA Journal,1964
5. J.P. Decker, P.K. Pierpont, Aerodynamic separation characteristics of conceptual parallel-staged reusable launch vehicle at Mach 3 to 6, NASA Technical Memorandum (NASA-TMX-1051), National Aeronautics and Space Administration, Washington, DC, January 1965.