Safwat, A. M., A. F. Nassar, R. S. Ettouney, and M. A. El-Rifai,
"Increasing octane number through minor modifications in an existing PENEX-DIH unit, A case study",
the 9th International Conference of the Egyptian Society of chemical Engineers, Egypt:” Sustainable Development in Oil, Gas, Petrochemical, and Chemical Process Industries”, semiramis, 22 December, 2014.