1. African Development Bank (AfDB). (2013). Gender, poverty and environmental indicators on African countries, 2013 (Vol. XIV). Tunis: African Development Bank.
2. African Development Bank (AfDB), African Union Commission (AUC), & United Nations Economic Commission for Africa (UNECA). (2013). African statistical yearbook, 2013. Tunis: African Development Bank.
3. African Development Bank (AfDB), Organization for Economic Cooperation and Development (OECD), United Nations Development Programme (UNDP), & United Nations Economic Commission for Africa (UNECA). (2011). African economic outlook 2011. Paris: OECD.
4. Al-Marhubi, F. (2000). Export diversification and growth: An empirical investigation. Applied Economics Letters, 7(9), 559–562.
5. Almqvist-Tangen, G., & Axelsson, Å. (2006). Considerations of the concept of infant health: A literature review. Early Child Development and Care, 176(6), 575–589.