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== Referensi ==
{{reflist|35em|refs=<ref name=Grindle2003>}}
{{cite book | last=Grindle | first=Thomas J.|last2=Burcham, Jr. | first2 = Frank W.
| title=Engine Damage to a NASA DC-8-72 Airplane From a High-Altitude Encounter With a Diffuse Volcanic Ash Cloud
| publisher=NASA Dryden Flight Research Center|location=California|date=August 2003
| url=http://www.skybrary.aero/bookshelf/books/1161.pdf | accessdate = 30 May 2015}}</ref>
<ref name="GVP">
{{cite gvp | vnum = 1702–07= | name = Hekla | accessdate = 18 December 2008}}</ref>
<ref name=Thorarinsson1967>
{{cite journal | author = Sigurdur Þórarinsson | authorlink = Sigurdur Thorarinsson
| title = The eruption of Hekla in historical times. Vol. I: The eruption of Hekla 1947–48
| year = 1967 | journal = Soc. Sci. Islandica| volume = 38 | pages = 1–183 | publisher = }}</ref>}}
== Link eksternal ==
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