1. http://neic.usgs.gov/neis/poster/2004/20041226_image.html
2. http://www.gps.caltech.edu/~jichen/Earthquake/2004/aceh/aceh.html
;
http://www.eri.u-tokyo.ac.jp/sanchu/Seismo_Note
(in Japanese).
3. Ni, S., Kanamori, H. & Helmberger, D. Nature 434, 582 (2005).
4. Stein, S. & Okal, E. A. Nature 434, 581–582 (2005).
5. Committee on the Science of Earthquakes Living on an Active Earth: Perspectives on Earthquake Science (Natl Academies Press, Washington DC, 2002).