2011
- A. Zuraida, S. Norshahida, I. Sopyan, and H. Zahurin, Effect of Fiber Length Variations on Properties of Coir Fiber Reinforced Cement-Albumen Composite (CFRCC), IIUM Engineering Journal, Vol. 12, pp. 63-76, 2011.Â
- Radhiyah Abd Aziz, Nor Asyikin and Iis Sopyan, Synthesis of TiO2- SiO2 powder photocatalyst via sol-gel method: Effect of titanium precursor type on powder properties, Journal of The Institution of Engineers Malaysia, Vol. 70, pp. 34-40, 2009.
- Nor Hafizah, Parveen Jamal, Mohd. Ismail Abdul Karim and Iis Sopyan, TiO2 powder photocatalyst from sol-gel route and its immobilization with cement  for photocatalytic phenol removal, Journal of The Institution of Engineers Malaysia, Vol. 70, pp. 57-64, 2009.