Saputri, D. R., & Purwanto, W. W. (2018). Synthesis of Ni/CaO-γ-Al2O3@Ru Core Shell via Micro-Emulsion Method for Bio-oil Steam Reforming of Empty Fruit Bunch, 18(1), 44-52. Diambil dari https://journal.ugm.ac.id/v3/AJChE/article/view/9013