Super Low-Noisy Cooling Amplifier of Millimeter Range with Using the HEMT-Transistors O.D. Poustylnik, A.A. Maksiasheva et O.P. Golovchenko J. Phys. IV France, 06 C3 (1996) C3-245-C3-249 DOI: 10.1051/jp4:1996337