Mustafa, K., خلیل, M. Khalil, مازن, A. Abdullah, and عبد. “The Effect of Static Pressure on the Loss of Transition through an Optical Fiber With a Constant Multi-Pattern Refractive Index”. Journal of Education and Science (JES), vol. 18, no. 3, Apr. 2006, pp. 150-67, doi:10.33899/edusj.2006.77504.