1. Impact of On/Off Control on Heat Pumps – Computer Model;Bergman,1985
2. Carrier, 2006. Fan-coils Indrofan 42N (in Swedish).
3. Method for Calculating the Seasonal Performance Factor for Heat Pumps;Fehrm,1981
4. Fahlén, P., 2002. Ground-source heat pumps – recharging of bore-holes by exhaust-air coils. In: Proceedings of the 7th IEA Heat Pump Conference – Heat Pumps Better by Nature, Beijing, China, pp. 1027–1040.
5. Fahlén, P., 2004. Heat pumps in hydronic heating systems – efficient solutions for space heating and domestic hot water heating. Research programme “Efficient refrigeration and heat pump systems”, pp. 48 (in Swedish).