Accuracy evaluation of the optically pumped Cs frequency standard at NRLM. - Ken Hagimoto; Shin-ichi Ohshima; Yasuhiro Nakadan; Yasuki Koga (IEEE Trans. Instrum. Meas., 1999)

Preliminary evaluation of the Cs atomic fountain frequency standard at NMIJ/AIST. - Takayuki Kurosu; Yasuhiro Fukuyama; Yasuki Koga; Kentaro Abe (IEEE Trans. Instrum. Meas., 2004)

Stability degradation factors evaluated by phase noise measurement in an optical-microwave frequency link using an optical frequency comb. - Hajime Inaba; Shinya Yanagimachi; Feng-Lei Hong; Atsushi Onae; Yasuki Koga; Hirokazu Matsumoto (IEEE Trans. Instrum. Meas., 2005)

Reevaluation of the Optically Pumped Cesium Frequency Standard NRLM-4 With an H-Bend Ring Cavity. - Ken Hagimoto; Yasuki Koga; Takeshi Ikegami (IEEE Trans. Instrum. Meas., 2008)