1.
علي عسّاف, سليمان الخضر, ميساء شعبان. A study of gravitational field equation in general relativity. TUJ-BA [Internet]. 2022Aug.11 [cited 2024Nov.24];44(1):131-42. Available from: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/13326