Ahmad, W., G. H. Awan, T. Ahmad, M. T. Z. Butt, L. A. Kasuri, and M. Kamran. 2015. “Phase Based Study of Solidified Structures Evolved During the TIG Welding of 2219-T87 Aluminum Alloy”. Journal of the Pakistan Institute of Chemical Engineers 43 (2):45-56. http://piche.org.pk/journal/index.php/jpiche/article/view/247.