Design, Construction, and Performance Evaluation of a Cryogenic 7-mm Coaxial Noise Standard. - Tae-Weon Kang; Jeong-Hwan Kim; E. F. Yurchuk; Jeong-Il Park; M. V. Sargsyan; I. E. Arsaev; R. I. Ouzdin (IEEE Trans. Instrum. Meas., 2007)