Y. Juwita, J. Karman, Y. Hutapea, and S. Suparwoto, “Suitability of Rubber Plantation Land Intercropped with Corn (Zea mays L) Plants in Betung Village of Banyuasin District”, J. Lahan Suboptimal, vol. 9, no. 1, pp. 73–79, Apr. 2020.