Bahman Ramezani Gourabi,  Identifying Dry Years by Using the Dependable Rainfall Index and Its Effects on the Olive Crop in Roudbar, Gilan, South Western of Caspian Sea.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2010, vol. 43(7). 448 - 451
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/1441.