IISEE. "Search parameters page". Catalog of Damaging Earthquakes in the World (Through June, 2009). Archived from the original on 22 July 2011. Retrieved 23 August 2011.
web.archive.org
IISEE. "Search parameters page". Catalog of Damaging Earthquakes in the World (Through June, 2009). Archived from the original on 22 July 2011. Retrieved 23 August 2011.