HUTAGALUNG, Samuel. Water Flow & Temperature Control to Increase Extraction Yield of Light-roasted Coffee Beans. Ultima Computing : Jurnal Sistem Komputer, [S. l.], v. 14, n. 2, p. 54–59, 2022. DOI: 10.31937/sk.v14i2.2810. Disponível em: https://ejournals.umn.ac.id/index.php/SK/article/view/2810. Acesso em: 18 sep. 2025.