S. R. Yusticia, A. Maulana, J. Junainah, S. R. Afriani, M. R. Galang, and B. Saputra, “Evaluation of Heterogeneity and Sampling Precision in the Black Bunch Census: a Study of Six Oil Palm Blocks in Banyuasin”, JGSA, vol. 6, no. 2, pp. 201–209, Aug. 2026.