1. Fluctuating Pressure Field of a Ducted Propeller;Dang,1974
2. The Fluctuating Pressure Field of a Ducted Impeller;Dang,1975
3. Three Dimensional Theory of Ducted Impellers;Ordway,1960
4. General Harmonic Solutions for the Ducted Propeller;Ordway,1961
5. A Perturbation Method for the Solution of Singular Integral Equations;Dang,1972