1. Barclay, J. A., Steyert, W. A.: 1982, Cryogenics, February, 73.
2. Bock, J. J.: 1994, this volume.
3. Cunningham C. R., Gear, W. K.: 1990, in Proc. of the SPIE Syrnp. on Astronomical Telescopes and Instrumentation for the 21st Century, Tucson.
4. Davenport, I., Smith, A., Hepburn, I., Ade, P. A. R., Sumner, T. J.: 1992, in Proc. of an ESA Symp. on Photon Detectors for Space Instrumentation, ESA SP-356.
5. Hudson, R. P.: 1972, Principles and Applications of Magnetic Cooling, North Holland Pub.