SAHBUDIN, M.; HERMAWAN, W.; SUTEJO, A. Optimization of used engine oil Furnace Design with Initial Heater. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), [S. l.], v. 13, n. 4, p. 1237–1248, 2024. DOI: 10.23960/jtep-l.v13i4.1237-1248. Disponível em: https://jurnal.fp.unila.ac.id/index.php/JTP/article/view/9203. Acesso em: 26 nov. 2025.