NEDUNCHEZHIYAN, M, et al. “Productivity Potential, Biological Efficiency and Economics of Sweet Potato (Ipomoea Batatas) - Based Strip Intercropping Systems in Rainfed Alfisols*”. The Indian Journal of Agricultural Sciences, vol. 80, no. 4, July 2010, https://epubs.icar.org.in/index.php/IJAgS/article/view/228.