Comparison between Direct and Coherent Optical Communication System. Baghdad Science Journal, Iraq, Baghdad, v. 8, n. 2, p. 479–484, 2011. DOI: 10.21123/bsj.2011.8.2.479-484. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2538.. Acesso em: 19 may. 2024.