งานวิจัย ปี 2012
Songtham, W., Jintasakul, P., Chitnarin,  A.  Sustainable Development of
               Geological Resources in Nakhon Ratchasima Province, NE Thailand. 
               International UNESCO Conference on Geoparks. Unzen Volcanic Area Global
               Geopark, Japan.  May 12-15,2012. P.82.  (PDF.File)  
Songtham, W., Duangkrayom, J.,  Jintasakul , P.   An Australasian Tektite from the Yasothon Soil Series,
                      Noen Sa-nga, Chaiyaphum, Northeastern Thailand. Acta Geoscientica Sinica.  (Link)  
 
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