1. Refrigerant oil for alternative refrigerant-134a.;Doys;Int. J. of Refrigeration,1990
2. Pita, E. G. Refrigeration Principles and Systems, John Wiley and Sons.
3. Synthetic lubricants and their refrigeration applications.;Short;Lub. Eng.,1990
4. Knapp, M. H. The use of synthetic lubricants in compressor. Purdue Compressor Tech. Conf., 1972, 480-482.
5. Sundaresan, S. G. and Finkenstadt, W. R. PAG and polyol ester lubricant—candidates for use with HFC-134a in refrigeration compressors. ASHRAE Conference, 1992.