ZADRY, H. R. Cover & Preface JOSI 20(1) 2021. Jurnal Optimasi Sistem Industri, Padang, ID, v. 20, n. 1, p. 1–71, 2021. DOI: 10.25077/josi.v20.n1.p1-71.2021. Disponível em: https://josi.ft.unand.ac.id/index.php/josi/article/view/535. Acesso em: 31 jan. 2023.