7Le comet D M, Warren H E. Modeling the impact of summer temperature on national electricity consumptions [J]. Journal of Applied Meteorology 1981,20:1431- 1439.
8Lehman R L, Warren H E. Projecting monthly natural gas sales for space heating using a monthly updated model and degree-days from monthly outlooks [J]. Journal of Applied Meteorology, 1994, 33 (1): 96- 106.
9Sarak H, Satman A. The degree-day method to estimate the residential heating natural gas consumption in Turkey: a case study [J]. Energy, 2003, 28:929 -939.
