[1] J. A. Scheer, J. L. Kurtz. Coherent Radar Performance Estimation(1993).
[26] T. W. Hänsch. Nobel lecture: passion for precision. Rev. Mod. Phys., 78, 1297-1309(2006).
[47] G. J. Dick. Local oscillator induced instabilities in trapped ion frequency standards. Proceedings of the 19th Annual Precise Time and Time Interval Systems and Applications Meeting, 133-147(1987).