NERMEN J. KHALEL; NABEEL E. ARIF. Chromatic Number and some Properties of Pseudo-Von Neumann Regular graph of Cartesian Product of Rings. Tikrit Journal of Pure Science, [S. l.], v. 25, n. 3, p. 135–140, 2020. DOI: 10.25130/tjps.v25i3.262. Disponível em: https://tjps.tu.edu.iq/index.php/tjps/article/view/262. Acesso em: 18 may. 2024.