"T. Matsushita,T. Pipatpongsa,N. Mungpayabal,P. Wattanachai","Possible use of hollow plaster cylinders for indicating the axis of major principal stress in soft rock surface","The 47th Japan National Conference on Geotechnical Engineering","Proceedings of the 47th Japan National Conference on Geotechnical Engineering","Japanese Geotechnical Society",,,"pp. 853-854",2012,July
"Rewadee Wangsa,J. Wongsiriworakul,N. Mungpayabal,T. Pipatpongsa,P. Wattanachai","Residual shear strength of Mae Moh clay seam measured by multiple reversal direct shear box test under constant load","The 17th National Convention on Civil Engineering","Proceedings of the 17th National Convention on Civil Engineering (NCCE17)","Engineering Institute of Thailand","  CD-ROM","  GTE012","page 1-10",2012,May
"T. Pipatpongsa,S. Heng,Prajuab Doncommul,Noppadon Mungpayabal,PITIWAT WATTANACHAI","Shear strength parameters of clay seam placed between underburden layers of rock masses in the Mae Moh open-pit mine","The 15th National Convention on Civil Engineering, Thailand",,"Engineering Institute of Thailand",,"  GTE61","  CD-ROM",2010,May