Shaker, Maan M., Mahmood Sh. Majeed, and Raid W. Daoud. “A New Approach for Representing Photonic Crystal Fiber Index Profile to Determine Their Optical Characteristics”. Iraqi Journal for Electrical and Electronic Engineering 7, no. 1 (May 31, 2011): 73–77. Accessed December 8, 2025. https://ijeee.edu.iq/ijeee/article/view/156.