TY  - SER
AU  - Hwang, Yunho
AU  - Ohadi, Micheal
AU  - Radermacher, Reinhard
TI  - Advanced Energy Systems Natural Refrigerants;  Substances Such As Air, Water , Ammonia, Hydrocarbons, and Carbon  Dioxide May Provide Solutions toProblem of Finding Environmentally Acceptable Alternatives
KW  - Refrigeration and Refrigerating
ER  -