Nermen J. Khalel, Nabeel E. Arif. Chromatic Number and some Properties of Pseudo-Von Neumann Regular graph of Cartesian Product of Rings. Tikrit J. Pure Sci. [انترنت]. 17 مارس، 2020 [وثق 18 مايو، 2024];25(3):135-40. موجود في: https://tjps.tu.edu.iq/index.php/tjps/article/view/262