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4. 4) Rubbert, P. E. and Saaris, G. R.: A General Method for Determining the Aerodynamic Characteristics of Fan-In-Wing Configurations, Technical Report, USA AVLABS, 1967.
5. 5) Rubbert, P. E. and Saaris, G. R.: Review and Evaluation of a Three-Dimensional Lifting Potential Flow Analysis Method for Arbitrary Configurations, AIAA Paper 72-188, 1972.