ALI, Sinan H. Study photometric properties of spiral galaxy NGC 4448 using CCD camera with multiband filters. Iraqi Journal of Physics, Baghdad, Iraq., v. 15, n. 35, p. 8–13, 2018. DOI: 10.30723/ijp.v15i35.47. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/47. Acesso em: 26 mar. 2025.