“Diffraction Efficiency in Coupling Quasi-Degenerated in Photorefractive Materials”. BISTUA Revista de la Facultad de Ciencias Básicas 17, no. 2 (August 5, 2019): 151–157. Accessed October 15, 2025. https://ojs.unipamplona.edu.co/index.php/bistua/article/view/244.