1.Seif Eldin Ibrahim and Ahmed Elsheikh M. Ahmed, “On the Unbiasedness and Consistency Properties of Mean-Difference”, Sudan Journal of Economic and Social studies, Khartoum, vol. 4, No 1, 1982.
2.“An Empirical Analysis of Private Investment Behaviour in the Sudan Economy over the period 1955-1974”. Sudan Journal of Economic and Social Studies, Faculty of Economic and Social Studies, University of Khartoum, Vol. 5, No. 1983.
3.“A price Determination Equation for Sudan Economy over the Period 1955-1974”, the Administration and Political Science review, Faculty of Administration and Political Sciences, The United Arab Emirates University, Issue No 3, May 1987.
4.Siddig Mohamed-Ahmed and Ahmed Elsheikh M. Ahmed, “Analysis of Non-Sampling Errors in Censuses and Surveys: with Special Reference to the Sudan Experience”, Sudan Note and Records, Vol. 65, 1987.
5) An Import demand Function for the Sudan Economy”, the Economic and Administrative Sciences Review, The United Arab Emirates University Issue No. May 1990.
6)” نحو معدل للتنمية البشرية للسودان 1975- 2003 “أحمد الشيخ محمد أحمد وآخرون – مجلة البحوث والدراسات الإنسانية- المجلد الأول – العدد الأول 2009.
7) The long – run Relationship Between Money Supply, Real GDP and Price Level: Empirical Evidence from Sudan, Ahmed Elsheikh M. Ahmed and Suliman Zakaria , Journal of Business Studies Quarterly, March 2011, Volume 2 Number 2 , USA.
8) Modeling stock market volatility Using GARCH Model Evidence from Sudan, Ahmed Elsheikh M. Ahmed and Suliman Zazaria Suliman, International Journal of Business and Social Science ,Vo12 No . 23 Special Issue, Dec.2011, centre for Promoting Ideas, USA.
9) “تقييم مناخ الاستثمار في السودان” أحمد الشيخ محمد أحمد وآخرون – المجلة العلمية لكلية التجارة والدراسات الاقتصادية والاجتماعية – جامعة النيلين – المجلد الأول – العدد الأول – يناير 2012.
10) Macro econometric Model for the Sudan Economy Ahmed Elsheikh M. Ahmed, Omer Ali Ibrahim, and Khalafalla A.M Arabi , Review of Economics and finance, Academic Research Centre of Canada , Canada , 2013.
11) Modeling the Impact of Inflation on Stock market Returns and Volatility: Evidence from Sudan, Ahmed Elsheikh M. Ahmed and Suliman Zaharia Suliman, El-Masrafi Magazine, Vol 67 March 2013.
12) Sudan 2015 General Election: Speculation on the Number of Seats Wonley the National Congress Party and other Parties Based on aTheoretic Game Model. Ahmed Elsheikh M.Ahmed and Leena A.Elsheikh. International Journal of Business and Social Science .Vol.6,No.9 September 2015 ,Center for Promoting Ideas ,USA.