Yazdifar, Mohammadreza, Ibrahim Esat, and Mahshid Yazdifar. “The Effect of Hollow Sphered Structure on Stress Shielding Reduction”. European Scientific Journal, ESJ 14, no. 6 (February 28, 2018): 16. Accessed April 20, 2024. https://eujournal.org/index.php/esj/article/view/10513.