Pane, L. G. H. . (2023). Analisis Efisiensi Teknis Perkebunan Kakao Sumatera Utara Dengan Pendekatan Stochastic Frontier (SFA). Journal of Analytical Research, Statistics and Computation, 2(1), 63–77. https://doi.org/10.4590/jarsic.v2i1.19