Mumtaz Baryal, et al. “Nitrogen Management in Maize + Soybean Intercropping System in Semi-Arid Condition of Kandahar, Afghanistan”. Annals of Agricultural Research, vol. 40, no. 1, Dec. 2023, pp. 62-67, https://epubs.icar.org.in/index.php/AAR/article/view/127483.