PUSPANANTASARI , E. .; PARINOV, I. A. .; WONGLOUCHA, C. . Efficiency Evaluation in Indonesia’s Quarrying Industry Using Variable Combinations DEA . Spektrum Industri, [S. l.], v. 22, n. 2, p. 90–110, 2024. DOI: 10.12928/si.v22i2.227. Disponível em: https://journal3.uad.ac.id/index.php/spektrum/article/view/227. Acesso em: 2 jan. 2025.