PRAJOGO TAMBUNAN, Combest; HASIBUAN, Febriyanti; NASUTION, Alvi Sahrin. Optimasi Produksi Perusahaan Semen dengan Pendekatan Fungsi Turunan: Studi pada PT Semen Indonesia Tbk. QISTINA: Jurnal Multidisiplin Indonesia, [S. l.], v. 4, n. 2, p. 1425–1433, 2025. DOI: 10.57235/qistina.v4i2.7309. Disponível em: https://rayyanjurnal.com/index.php/qistina/article/view/7309. Acesso em: 12 jun. 2026.