M. . Yousif Fattah, H. . Ali Omran, and T. . Mohammed Abdulatif, “Modification of Pinhole Apparatus for Identification and Classification of Dispersive Clay Soils”, J. eng. sustain. dev., vol. 18, no. 6, pp. 181–201, Nov. 2014, Accessed: Jun. 04, 2026. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/929