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2. A high efficient l2kW refrigerator for the LEP200 project at CERN;Chromec,1993
3. A 12/18kW at 4.5K Helium refrigerator for CERN's UP superconducting accelerating cavities;Gistau,1994
4. Architecture of the LEP2 cryogenics control system: conception, status and evaluation;Gayet,1994