2003 · Shen Jen, B.C.C. Teng, et al. · Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS) · 14
2005 · M.M.C. Chou, Shen Jen, et al. · Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS) · 10