Mohd Aarif, Samira Khan, S. M. R. S. S. V. D. M. “Measuring the Effectiveness of Capital Structure on Firm Performance: A Comparative Analysis”. European Economic Letters (EEL), vol. 13, no. 4, Aug. 2023, pp. 121-34, https://eelet.org.uk/index.php/journal/article/view/536.