1. www.ixblue.com
2. Department of Defense, Developing Science & Technologies List, Section 16: Positioning, Navigation and Time Technology. Office of the Under Secretary of Defense, Acquisition, Technology and Logistics, Washington, D.C., January 2006.
3. Barbour, N. and Schmidt, G., Inertial Sensor Technology Trends, IEEE Sensors Journal, vol. 1, no. 4, December 2001, pp. 332–339.
4. Paturel, Y., Rumoroso, V., Chapelon, A., and Honthaas, J.Y., MARINS, the first FOG navigation system for submarine, Symposium Gyro Technology, 2006.
5. Walsh, Ed., Navy and industry investigate new superaccurate optical gyros for possible use on ballistic missile submarines, Military & Aerospace Electronics, 2001.