References
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- Harrower, M.J. and D’Andrea, A.C. 2014. “Landscapes of state formation: geospatial analysis of Aksumite settlement patterns (Ethiopia).” African Archaeological Review 31: 513–541. doi:10.1007/s10437-014-9165-4
- Michels, J.W. 2005. Changing Settlement Patterns in the Aksum-Yeha Region of Ethiopia: 700 BC – AD 850. Oxford: Archaeopress.
- Tiffen, M., Mortimore, M. and Gichuki, F. 1994. More People, Less Erosion: Environmental Recovery in Kenya. Chichester: Wiley.