Gundalia, M., and M. Dholakia. “Modeling of Reference Evapotranspiration in Middle South Saurashtra Region of India Using Dominant Meteorological Variables”. Boson Journal of Modern Physics, Vol. 2, no. 1, Oct. 2015, pp. 73-83, http://scitecresearch.com/journals/index.php/bjmp/article/view/388.