1. Design and operating characteristics of the Zimmern single screw compressor;Zimmern,1972
2. The development of oil injected screw compressors for refrigeration;Laing,1960
3. Mechanical design and efficiency of screw compressors;O'Neill,1966
4. Development of the Monoscrew compressor;Keijer,1975
5. A new concept of refrigeration screw compressors;Lundberg,1974