1. Aerts R, Moeyersons J, November E, Nyssen J, Taha N, Aynekulu E, Haile M,Deckers, J. Excursion Guide to the Danakil. HighLAND 2006 Conference, 23-24 September 2006, Mekelle, Ethiopia, 2006. Katholieke Universiteit Leuven, Belgium, 22. https://livias.kuleuven.be/bitstream/123456789/223188/1/aerts .
2. Allard P, Dajlevic D, Delarue C. Origin of carbon dioxide emanation from the 1979 Dieng eruption, Indonesia: Implications for the origin of the 1986 Nyos catastrophe. J Volcanol Geotherm Res. 1989;39:195–206.
3. Altunel E, Hancock PL. Morphology and structural setting of Quaternary travertines of Pamukkale, Turkey. Geol J. 1993;28:335–46.
4. Ash J, Atkins J. Birds of Ethiopia and Eritrea: An atlas of distribution. London: Christopher Helm; 2009.
5. Ayele A, Jacques E, Kassim M, Kidane T, Omar A, Tait S, et al. The volcano-seismic crisis in Afar, Ethiopia, starting in September 2005. Earth Planet Sci Lett. 2007;255(1-2):177–87.