1. High temperature heat pumps: market overview, state of the art, research status, refrigerants, and application potentials;Arpagaus;Energy,2018
2. The coefficient of determination—some limitations;Barrett;Am. Stat.,1974
3. Selection of refrigerants on a per-application basis;Billiard;Trends. Int. Inst. Refrig.,2002
4. Research trend of cascade heat pumps;Boahen;Sci. China Technol. Sci.,2017
5. Efficient control of cascade heat pumps using variable speed compressors;Boahen;Sci. Afr.,2022