1. Shively , C. A. Review of Methods for GPS Integrity The MITRE Corporation, MP-87W22 March 1988
2. Kalafus , R. M. Chin , G. Y. Performance Measures of Receiver-Autonomous GPS Integrity Monitoring Proceedings of the ION National Technical Meeting, Santa Barbara 1988
3. Lee , Y. C. Analysis of Range and Position Comparison Methods as Means to Provide GPS Integrity in the User Receiver Proceedings of ION 42nd Annual Meeting, Seattle 1986
4. Lee , Y. C. The MITRE Corporation Memorandum W46-M4380 25 February 1986
5. Lee , Y. C. The MITRE Corporation Memorandum W46-M4422 4 April 1986