1. Heat pumps: a survey on heat sources;Parise,1985
2. Continuous and discontinuous capacity control for high speed refrigeration compressors;Holdack-Janssen,1984
3. Optimum utilization of capacity control devices in reciprocating compressors;Verma,1986
4. Effects of speed control on the valve performance and on the energy efficiency of heat reciprocating compressors;Bredensen,1979
5. Over-re-expansion as a means of compressor capacity modulation;Yun,1984