Tien Ban, Nguyen, and Le Hai Chau. “A Study on Waveband Routing Optical Networks Employing Waveband Selective Switch-Based Cross-Connects”. <i>Vietnam Journal of Science and Technology</i>, vol. 50, no. 1, Apr. 2017, pp. 1-12, doi:10.15625/0866-708X/50/1/9463.