MESSAOUD, Z., and M. MERIEM-BENZIANE. “Experimental Study of the Effects of Semi-Elliptical Defects on the API X52 Pipeline and Its Reparation by Welding”. 2022. Journal of Mechanical Engineering and Sciences, vol. 16, no. 4, Jan. 2023, pp. 9269-88, doi:10.15282/jmes.16.4.2022.09.0733.