Heimildarskrá
Emilía Dagný Sveinbjörnjsdóttir. (29. 12 2004). Vísindavefurinn. Sótt frá visindavefurinn.is: https://www.visindavefur.is/svar.php?id=4687
Páll Einarsson. (19. 10 2012). Vísindavefurinn. Sótt frá visindavefurinn.is: https://www.visindavefur.is/svar.php?id=55503
Páll Einarsson. (19. október 2017). Vísindavefurinn. Sótt frá visindavefurinn.is: https://www.visindavefur.is/svar.php?id=55503
Tryggvi Þorgeirsson. (30. Júní 2000). Vísindavefurinn. Sótt frá visindavefurinn.is: https://www.visindavefur.is/svar.php?id=602
https://114843981-672684838866983460.preview.editmysite.com/uploads/1/1/4/8/114843981/edited/japan1.jpeg?1512394692
https://114843981-672684838866983460.preview.editmysite.com/uploads/1/1/4/8/114843981/editor/01-italy-earthquake.jpg?1511792925
https://114843981-672684838866983460.preview.editmysite.com/uploads/1/1/4/8/114843981/edited/download.jpeg?1512395667
https://114843981-672684838866983460.preview.editmysite.com/uploads/1/1/4/8/114843981/dispersed-wave_orig.gif

Páll Einarsson. (19. 10 2012). Vísindavefurinn. Sótt frá visindavefurinn.is: https://www.visindavefur.is/svar.php?id=55503
Páll Einarsson. (19. október 2017). Vísindavefurinn. Sótt frá visindavefurinn.is: https://www.visindavefur.is/svar.php?id=55503
Tryggvi Þorgeirsson. (30. Júní 2000). Vísindavefurinn. Sótt frá visindavefurinn.is: https://www.visindavefur.is/svar.php?id=602
https://114843981-672684838866983460.preview.editmysite.com/uploads/1/1/4/8/114843981/edited/japan1.jpeg?1512394692
https://114843981-672684838866983460.preview.editmysite.com/uploads/1/1/4/8/114843981/editor/01-italy-earthquake.jpg?1511792925
https://114843981-672684838866983460.preview.editmysite.com/uploads/1/1/4/8/114843981/edited/download.jpeg?1512395667
https://114843981-672684838866983460.preview.editmysite.com/uploads/1/1/4/8/114843981/dispersed-wave_orig.gif