[1] Kadioglu M, Zekai S.Degree-day formulations and application in Turkey.J Appl Meteor, 1999, 38(6):837-846. doi:  10.1175/1520-0450(1999)038<0837:DDFAAI>2.0.CO;2
[2] Thom H C S.Seasonal degree-day statistics for the Unite States.Mon Wea Rev, 1952, 80(9):143-147.
[3] Williams J.Heating Degree Days.http:∥www.usatoday.com/weather/resours/ask jack/wask days.htm.
[4] Wibig J.Heating Degree Days and Cooling Degree Days Variability in Lodz in the Period 1931-2000.Fifth International Conference on Urbun Climate.Lodz, Poland, 2003:471-474.
[5] Byrd G P.An adjustment for the effects of observation time on mean temperature and degree-days computations.J Clim Appl Meteor, 1985, 24(8):870-874. https://www.researchgate.net/publication/234524577_An_Adjustment_for_the_Effects_of_Observation_Time_on_Mean_Temperature_and_Degree-Day_Computations
[6] 谢庄, 王桂田.北京地区气温和降水百年变化规律的探讨.大气科学, 1994, 18(6):683-690. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK406.004.htm
[7] Zalom F G, Goodell P B, Wilson L T.Degree-days:The Calculation and Use of heat Units in Pest Management.Division of Agriculture and Natural Resources, University of California, 1972:1-11. http://cesantabarbara.ucanr.edu/files/75290.pdf
[8] 谢庄, 曹鸿兴, 李慧, 等.近百年北京气候变化的小波特征.气象学报, 2000, 58(3):362-369. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXB200003012.htm