د/ صالح عبدالله السالمي دصعا. A quantitative study of the effectiveness of the tax system in increasing general budget revenues in Yemen during the period (1990-2015 AD). cujahr [Internet]. 2025 Aug. 7 [cited 2026 Mar. 7];8(08). Available from: https://journals.civilizationuniv.edu.ye/index.php/cujahr/article/view/83