Research activites on time and frequency transfer using space links. - Kazuyuki Yoshimura; Michito Imae; Makoto Urazuka; Takao Morikawa; Taizo Yoshino; Saburo Kobayashi; Takashi Igarashi (Proc. IEEE, 1986)

Frequency-Stability Measurement System Using High-Speed ADCs and Digital Signal Processing. - Ken Mochizuki; Masaharu Uchino; Takao Morikawa (IEEE Trans. Instrum. Meas., 2007)