M. Kawaroe, H. Effendi, Z. I. Palupi, N. S. Hendra, and D. F. Lestari, “Utilization of Aquatic Weed Salvinia molesta as a Raw Material for Biogas Production”, JPHPI, vol. 22, no. 2, pp. 209–217, Aug. 2019, doi: 10.17844/jphpi.v22i2.27891.