Al-Hilal, M., and M. K. . Abdul-Wahed. “Soil Gas Radon Measurements for Investigating the Actual Status of Seismic Quiescence Along the Bounding Fault of the Ghab Pull-Apart Basin in Western Syria”. Geofisica Internacional, vol. 57, no. 3, July 2018, pp. 177-8, doi:10.22201/igeof.00167169p.2018.57.3.2110.