Salleh, Z., M. M. Islam, and J. A. Epaarachchi. “Analysis of Stress Concentration Factor for Tensile Characteristics of Syntactic Foam Using Finite Element Method”. Journal of Research Updates in Polymer Science, vol. 6, no. 1, Apr. 2017, pp. 21-32, doi:10.6000/1929-5995.2017.06.01.4.