MOHAMED ES. Bounds test cointegration approach to examine factors contributing to declining maternal mortality ratio in Sudan (1969-2015). J. Econ. Pol. Econ. [Internet]. 2018 Jul. 18 [cited 2024 Nov. 12];5(2):146-59. Available from: https://journals.econsciences.com/index.php/JEPE/article/view/1642