حميد د. ب. ي. ., and حمدون د. ع. ن. . “Using a Principal Component Analyses (PCA) to Determine Low Relief Anticlines / NW Iraq”. Journal of Petroleum Research and Studies, vol. 9, no. 4, Dec. 2019, pp. 23-38, doi:10.52716/jprs.v9i4.318.