Ying Xin and Shigeki Kametani, A Study on Changing of Energy-Saving Performance of GHP Air Conditioning System with Time-Series Variation. journal = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology. October 2013, vol. 83(11). 877 - 882 [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/9996573.