1
http://seisman.info/
http://examples.gmt-china.org/
http://docs.gmt-china.org
http://modules.gmt-china.org
2
http://geoweb.uwyo.edu/ggstudent/bflinch1/gmt-tutorials/index.html
3
http://www.gl.ntu.edu.tw/geodesy/index.php?option=com_content&task=view&id=29&Itemid=99999999