[1]
A. . Budi Setiawan, M. Yusuf, M. D. Pangestika, F. A. Junaedy, and S. W. Putro, “Production Cost Efficiency in Indonesian Soybean Farming: Evidence from a Stochastic Frontier Analysis”, JEP: KMEP, vol. 27, no. 1, pp. 51–66, Jun. 2026.