1. RAIM and GIC Working Together: The Ultimate Solution to the GPS Integrity Problem;Brown;NAVIGATION, Journal of The Institute of Navigation,1989
2. Sturza , M. A. Brown , A. K. Comparison of Fixed and Variable Threshold RAIM Algorithms September 1921, 1990 437 43
3. Lee , Y. C. Analysis of Range and Position Comparison Methods as a Means to Provide GPS Integrity in the User Receiver June 2426, 1986 1 4