R.F. Clark

Frequency measurement of a single barium ion transition with an ammonia laser

G. Magerl, K.J. Siemsen, A.A. Madej, 1992, Proceedings of the 1992 IEEE Frequency Control Symposium.

The microcalorimeter as a national microwave power standard

R.F. Clark, R. F. Clark, 1986, Proceedings of the IEEE.