AHMED, A. K. Studying the contribution of components and type of spiral galaxy NGC 6946 using digital image processing. Iraqi Journal of Physics, Baghdad, Iraq., v. 13, n. 28, p. 27–32, 2019. DOI: 10.30723/ijp.v13i28.240. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/240.. Acesso em: 23 nov. 2024.