1. Propeller Performance Tests of Wright Brothers' "Bent-End" Propellers
2. Ribner, H. S. “Notes on the Propeller and Slipstream in Relation to Stability,” NACA-ARR-L4I12A, October 1944.
3. Ribner, H. S. “'Formulas for Propellers in Yaw and Charts of the Side-Force Derivative,” NACA Technical Report 819, 1945.
4. Ribner, H. S. “Propellers in Yaw,” NACA Technical Report 820, 1945.