GOWRI, K VIJAYA, et al. “Influence of Leguminous and Non-Leguminous Tree Species on Yield and Economics of Rainfed Groundnut under Nitrogen and Phosphorus Fertilization”. The Indian Journal of Agricultural Sciences, vol. 70, no. 4, Mar. 2013, https://epubs.icar.org.in/index.php/IJAgS/article/view/28229.