A compact 150 GHz SIS receiver cooled by 4 K GM refrigeratorMasahiko Takahashi, Nobuharu Ukita, Ryohei Kawabe et al.|STIN|1993Cited by 7
A Compact SIS Receiver Cooled By 4 K GM RefrigeratorT. Kuriyama, Nobuharu Ukita, H. Hatakeyama et al.|International Astronomical Union Colloquium|1994Cited by 1