1. Performance of Plug Nozzles for Turbojet and Rocket Exhausts;Krase,1959
2. Effect of Plug Design on Performance Characteristics of Convergent-Plug Exhaust Nozzles;Krull;NACA RM E54HO5,1954
3. Effect of Several Design Variables on Internal Performance of Convergent-Plug Exhaust Nozzles;Krull;NACA RM E56G20,1956
4. Exhaust Nozzle Contour for Optimum Thrust