Abashar, M. E., Elnashaie, S. S. E. H., 1995, 12-15 June.  Bifurcation and chaos in fluidized bed catalytic reactors. Proceedings of the International Conference on Advances in Strategic Technologies (ICAST), Bangi, Selangor,  Malaysia. 

Elnashaie, S. S. E. H., Abashar, M. E., 1994, 5-11 June. Periodic and chaotic behaviour of unforced fluidized bed catalytic reactors. ACHEMA 94, International Meeting of Chemical Engineering, Biotechnology and Pollution Control Technology, Frankfurt, Germany.

Elnashaie, S. S. E. H., Abashar, M. E., 1993, 7-9 December. Periodic and chaotic behaviour of unforced and forced fluidized bed catalytic reactors. The First International Conference in Chemistry and its Applications, Faculty of Science, University of Quatar, Quatar.

 Elnashaie, S. S. E. H., Abashar, M. E., Elshishini, S. S., Elahwany, A. H., 1993, 7-9 December. Bifurcation, complex dynamics, and chaos in chemical and biochemical systems. The First International Conference in Chemistry and its Applications, Faculty of Science, University of Quatar, Quatar.

Al-Ahmad, M., Al-Fariss, T. F., Abashar, M. E., Ettouney, H. M., 1992, 14-16 November. An empirical correlation for solubility of paraffin waxes in base oils. Proceedings of the   International   Conference on: Chemistry in  Industry. Bahrain.

Elnashaie, S. S. E. H., Abashar, M. E. E., November 24-27, 1991. Optimal feed conditions for a class of gas solid catalytic reaction with non-monotonic kinetics. Proceedings of the third Saudi Engineering Conference.  College of Engineering, King Saud University, Riyadh, Saudi Arabia