1. K. Abdullah, M. Hussin, F. Zakaria, R. Muhamad, Z. Abdul Hamid, POFA: A potential partial cement replacement material in aerated concrete, in: Proceedings of the 6th Asia-Pacific Structural Engineering and Construction Conference, Kuala Lumpur, Malaysia, 2006.
2. Ash from oil-palm waste as a concrete material;Tay;J. Mater. Civ. Eng.,1990
3. The effectiveness of palm oil fuel ash in preventing expansion due to alkali-silica reaction;Awal;Cement Concr. Compos.,1997
4. Palm oil fuel ash: a potential pozzolanic material in concrete construction;Warid Hussin;J. Ferrocem.,1997
5. A Study of Strength and Durability Performances of Concrete Containing Palm Oil Fuel Ash;Abdul Awal,1998