El-Khadragy, A., Shazly, T., AlAlfy, I., Ramadan, M., El-Sawy, M. (2018). 'Thorium normalization as a hydrocarbon accumulation indicator for Lower Miocene rocks in Ras Ghara area, Gulf of Suez, Egypt', NRIAG Journal of Astronomy and Geophysics, 7(1), pp. 78-83. doi: 10.1016/j.nrjag.2018.01.002