Islam, Md. Imdadul, Md. Fazlay Rabbi, Risala Tasin Khan, and Jesmin Akhter. 2015. “Performance Evaluation of Cognitive Radio Network Based on 2-D Markov Chain”. Journal of Telecommunications and Information Technology 61 (3): 39-44. https://doi.org/10.26636/jtit.2015.3.966.