1. Refrigerant for a cryogenic throttling unit;Alfeev,1973
2. Technical level and ways of improvement of Joule-Thomson minicoolers;Abakumov,1995
3. 80 K-closed cycle throttle refrigerator;Longsworth,1995
4. http://www.mmr.com/mmrklim.htmlat 16.04.1996
5. Cryogenic refrigerator with single stage compressor;Longsworth,1994