1. Abraha M (2007) Geothermal exploration opportunities. Trans, Geothermal Res Council 31:41–48
2. ADB. 2014. African Development Bank; Interim Country Strategy Paper (I-CSP, 2014–2016); Yemen. 48p.
3. Al-Amri AMS (1994) Seismicity of the south-western region of the Arabian Shield and Southern Red Sea. J. African Earth Sci. 19:17–25
4. Alemngus A, Amlesom S, Bovas JJL (2017) An overview of Eritrea’s water resources. Intern. J.Engg. R and D 13:74–84
5. Barberi F, Varet J (1970) The Erta Ale volcanic range (Danakil Depression). Northern Afar, Ethiopia: Bulletin Volcanologique 34:848–917