1. JohnstonR. P. “Energy Efficient Engine—Preliminary Design and Integration Study,” NASA CR-135444, 1978.
2. Subsonic transport noise
3. Fan Noise Reduction: An Overview
4. HuffD. L. “Noise Reduction Technologies for Turbofan Engines,” NASA TM-2007-214495.
5. BolgerJ. J. “Three-Dimensional Design of Compressor Blades,” Ph.D. Thesis, Univ. of Cambridge, Cambridge, England, U.K. 1999.