R. P. Dwivedi , K. Kareemulla and R. H. Rizvi. 2013. “Agroforestry System in Saharanpur and Aligarh Districts of Uttar Pradesh: A Socio-Economic Analysis”. Indian Journal of Extension Education 49 (3&4): 121-25. https://epubs.icar.org.in/index.php/IJEE/article/view/144367.