Ahmed Naeem, R. M., and P. . A. Omar Mohammed. “The Basis of the Principle of Self-Sufficiency of Commercial Paper (Analytical Study)”. Basra Studies Journal, vol. 2, no. 58, Mar. 2025, pp. 85-108, http://bsj.uobasrah.edu.iq/index.php/bsj/article/view/293.