HUSSEIN, Nuha Ahmed. Design and constructions laser - induced breakdown spectroscopy system to determine the fertility of north Iraqi soil. Iraqi Journal of Physics, Baghdad, Iraq., v. 16, n. 38, p. 56–65, 2018. DOI: 10.30723/ijp.v16i38.9. Disponível em: https://www.ijp.uobaghdad.edu.iq/index.php/physics/article/view/9. Acesso em: 3 may. 2025.