Nawaz, H. M. U., M. S. R. Baig, and D. R. Q. . Idrees. “Development of Doctrine of Frustration: Departure from Absolutism in Contracts”. Journal of Peace, Development and Communication, vol. 4, no. 03, Jan. 2021, pp. 556–573, http://pdfpk.net/ojs/index.php/jpdc/article/view/123.