Thirumaleshwar, M Design, fabrication and performance of a Gifford Mcmahon cycle cryorefrigerator operating at 20k M.Thirumaleshwar - Bangalore : Indian Institute of Science, 1985. - xxi, 204 p. : ill. Includes references. phD;1985;Physics. Subjects--Topical Terms: Gifford Mcmahon cycleRefrigeratorCryogenic engineering Dewey Class. No.: 536.56 / N85