1. Abalde, M A (2014). School size policies: a literature review. OECD Education Working Papers, vol 106. Paris.
2. Allen, L, LaParl-Green, C, Miyawaki, M, Monroe, N, Siripanlch, S and Thompson, B (2009). The Peace Education Programmeme (PEP) evaluation (School of International and Public Affairs, Trans.). New York: Columbia University.
3. Barakat, B and Urdal, H (2009). Breaking the waves? Does education mediate the relationship between youth bulges and political violence? (Policy Research Working Papers): The World Bank.
4. Bassiri, D (1988). Large and small sample properties of maximum likelihood estimates for the hierarchical linear model. Michigan: Michigan State University. Department of Counseling, Educational Psychology and Special Education.
5. Blattman, C and Miguel, E (2010). Civil war. Journal of Economic Literature, 48(1), 3–57.