Beheshtizadeh, T. ., S. . Farmani-Mansor, and Z. . Habibinya. “Spatial Analysis of Hail and Its Suppression Methods (Case Study: East-Azerbaijan Province, Iran)”. Pure and Applied Science Advances, vol. 3, no. 7, July 2014, pp. 546-52, http://www.sjournals.com/index.php/sjpas/article/view/628.