www.damninteresting.com/?p=578
www.usnews.com/usnews/discovery/krakatoa.htm
www.asiadivesite.com/.../java/krakatoa.php
www.freewebs.com/krakatoa3000/
knowledgenews.net/.../krakatoa-tsunami-2.shtml
en.wikipedia.org/wiki/Krakatoa
my.opera.com/nielsol/blog/show.dml/160319