Defragmentation of flexible dense wavelength division multiplexing (FDWDM) networks using wavelength tunability criterion. - Krishna Kumar Naik B; Ruman Dutta; G. Shashidhara; R. Gowrishankar; Siva Sankara Sai Sanagapati; Bhyri Sai Kishore; Prabhat Praveen Behere (ANTS, 2016)