Design and construction Optically Gas Laser. Baghdad Science Journal, Iraq, Baghdad, v. 10, n. 4, p. 1223–1231, 2013. DOI: 10.21123/bsj.2013.10.4.1223-1231. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2836.. Acesso em: 2 may. 2024.