عبده دسوقي ناندي ابو العلا, and القراي عامر سالم الشيخ. “The Role of Administrative Supervision Scope and the Single Window to Increase the Efficiency of Investment (Case Study: Sudanese Ministry of Investment)”. Journal of Economics and Administrative Sciences, vol. 23, no. 100, Nov. 2017, p. 199, https://doi.org/10.33095/jeas.v23i100.211.