7. M. Rilyanti, R. R. Mukti, G.T.M. Kadja, M. Ogura, H. Nur, E.-P Ng, Ismunandar. “On the drastic reduction of organic structure directing agent in the steam-assisted crystallization of zeolite with hierarchical porosity”. Microporous and Mesoporous Materials, 230, 30-38. (2016).