Menachem, Zion. “The Output Field of Curved Waveguides With a Cross-Section of Alternating Hollow and Dielectric Layers”. Journal of Optics and Photonics Research 2, no. 2 (September 12, 2024): 77–85. Accessed June 7, 2025. https://ojs.bonviewpress.com/index.php/JOPR/article/view/3479.