S. Sarfaraz, and Tariq Masood Ali Khan. “A Study of Anomalous Wet and Dry Years in the Winter Precipitation of Pakistan and Potential Crop Yields Vulnerability”. Journal of Basic & Applied Sciences 11 (January 5, 2015): 637–644. Accessed February 23, 2025. http://sceintific-array.org/index.php/jbas/article/view/1353.