Radchagrit Supakulopas และ Sathon Vijarnwannaluk. (2012) Monitoring of total electron content variation in ionospheric region caused by earthquakes during 2009-2011. Chulalongkorn University:ม.ป.ท.Radchagrit Supakulopas และ Sathon Vijarnwannaluk. 2012. Monitoring of total electron content variation in ionospheric region caused by earthquakes during 2009-2011. ม.ป.ท.:Chulalongkorn University;Radchagrit Supakulopas และ Sathon Vijarnwannaluk. Monitoring of total electron content variation in ionospheric region caused by earthquakes during 2009-2011. ม.ป.ท.:Chulalongkorn University, 2012. Print.