KIAGUS AHMAD RONI; HERAWATI, N.; DEWI, D. K.; MARTINI, S. The Utilization of Kepyar Castor Oil (Ricinus Communis) and Alumina Silica Catalyst in Alcoholysis Process. Journal of Engineering and Scientific Research, [S. l.], v. 3, n. 1, p. 32 –, 2021. DOI: 10.23960/jesr.v3i1.76. Disponível em: http://jesr.eng.unila.ac.id/index.php/ojs/article/view/76. Acesso em: 5 jul. 2025.