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2. Development of thought on the nature of geothermal fields in Iceland from medieval times to the present;Björnsson;Proceedings of the World Geothermal Congress 2005,2005
3. The possible role and contribution of geothermal energy to the mitigation of climate change;Fridleifsson,2008
4. Geothermal Reservoir Engineering;Grant,1982
5. Über das Wesen der Heissen Quellen Islands [The nature of the hot springs in Iceland, in German];Einarsson;Society Sciences of Islandica,1942