Nik Ahmad Nizam Nik Malek, Alias Mohd yusof (2007). Removal of Cr(III) from aqueous solutions using zeolite NaY prepared from rice husk ash. The Malaysian Journal of Analytical Sciences. 11(1): 76-83.
Noor Azhana Ghazi, Khairina ‘Izzati Amir Hussain, Nik Ahmad Nizam Nik Malek and Salehhuddin Hamdan (2012). The effect of zeolite X and Y on Cancer Cell Lines. Journal of Science and Technology, 4(1): 33-40.
Alias Mohd Yusof, Nik Ahmad Nizam (2009).Removal of Cr(VI) and As(V) from aqueous solutions by HDTMA-modified zeolite Y. Journal of Hazardous Materials, 162: 1019-1024. (Elsevier, Impact factor: 4.144 by ISI Web of Knowledge for 2010)
A. M. Yusof, N. H. Idris, N. A. N. N. Malek, A. K. H. Wood (2009). Use of granulated modified zeolite Y for the removal of inorganic arsenic and selenium species. Journal of Radioanalytical and Nuclear Chemistry. 281: 269-272. (Springer, Impact factor: 0.631 by ISI Web of Knowledge for 2010)
Alias Mohd Yusof, Lee Kian Keat, Zaharah Ibrahim, Zaiton Abdul Majid, Nik Ahmad Nizam Nik Malek (2010). Kinetic and equilibrium studies of the removal of ammonium ions from aqueos solution by rice husk ash-synthesized zeolite Y and powdered and granulated forms of mordenite. Journal of Hazardous Materials. 174: 380-385. (Elsevier, Impact factor: 4.144 by ISI Web of Knowledge for 2010)
Alias Mohd Yusof, Nik Ahmad Nizam, Noor Aini Abdul Rashid (2010). Hydrothermal conversion of rice husk ash to faujasite-types and NaA type of zeolite. Journal of Porous Materials. 17: 39-47. (Springer, Impact factor: 0.788 by ISI Web of Knowledge for 2010)
Alias Mohd Yusof, Nik Ahmad Nizam Nik Malek, Nurul Asyikin Kamaruzaman, Muhammad Adil (2010), Removal of Ca2+ and Zn2+ from aqueous solutions by zeolites NaP and KP zeolites. Environmental Technology. 31: 41-46. (Taylor & Francis Ltd, Impact factor: 0.762 by ISI Web of Knowledge for 2010)