A. G. SHAH, T. MAHMOOD, M. N. NAEEM, and S. H. ARSHAD. 2013. “Vibration Characteristics of Submerged Functionally Graded Cylindrical Shell on Winkler and Pasternak Foundations Using Wave Propagation Approach”. Sindh University Research Journal - SURJ (Science Series) 45 (2). https://sujo.usindh.edu.pk/index.php/SURJ/article/view/5570.