1. R. Lutwak, D. Emmons, W. Riley, R.M. Garvey, The chip-scale atomic clock - coherent population trapping vs. conventional integration. 34th Annual Precise and Time Interval (PTTI) Systems and Applications Meeting. 3-5 December 2002. Virginia. USA.
2. S. Knappe, P. Schwindt, V. Shah, L. Hollberg, J. Kitching, Microfabricated Atomic Frequency References. Proceedings of the 2004 IEEE International Ultrasonics, Ferroelectrics. and Frequency Control Joint 50th Anniversary Conference. 24-27 August. 2004. Montréal. Canada.
3. R. Lutwak, D. Emmons, T. English, W. Riley, The chip-scale atomic clock-recent development progress. 35th Annual Precise Time and Time Interval Systems and Applications Meeting 2003. 2-4 December 2003. San Diego. California.
4. D.W. Younger, L.M. Lust, D.R. Carlson, S.T. Lu, L.J. Forner, H.M. Chanhvongsak, T.D. Stark, A Manufacturable Chip-scale Atomic Clock. International Conference on Solid-State Sensors Actuators and Microsystems. TRANSDUCERS 2007. June 10–14. 2007. Lyon. France.
5. Product datasheet available on www.symmetricom.com.