An evaluation of research performance for different subject categories using Impact Factor Point Average (IFPA) index: Thailand case study. - Narongrit Sombatsompop; Teerasak Markpin; Wutthisit Yochai; M. Saechiew (Scientometrics, 2005)

Categorization and trend of materials science research from Science Citation Index (SCI) database: A case study of ceramics, metallurgy, and polymer subfields. - Narongrit Sombatsompop; Teerasak Markpin; T. Buranathiti; Preeyanuch Ratchatahirun; T. Metheenukul; N. Premkamolnetr; Wutthisit Yochai (Scientometrics, 2007)

Article-count impact factor of materials science journals in SCI database. - Teerasak Markpin; Boonrat Boonradsamee; K. Ruksinsut; Wutthisit Yochai; N. Premkamolnetr; Preeyanuch Ratchatahirun; Narongrit Sombatsompop (Scientometrics, 2008)

Redistributed random sampling method for categorizing materials research publications from SCI database: Metallurgy and polymer subfields. - T. Buranathiti; N. Premkamolnetr; Teerasak Markpin; Preeyanuch Ratchatahirun; Wutthisit Yochai; Narongrit Sombatsompop (Scientometrics, 2009)

Relationship on research publications and productivity-export volumes for natural rubber. - Narongrit Sombatsompop; Teerasak Markpin; E. Wimolmala; Preeyanuch Ratchatahirun; N. Premkamolnetr; Boonrat Boonradsamee; Wutthisit Yochai (Scientometrics, 2009)

The effects of choice of database and data retrieval methods on research performance evaluations of Asian universities. - Teerasak Markpin; Nongyao Premkamolnetr; Santi Ittiritmeechai; Chatree Wongkaew; Wutthisit Yochai; Preeyanuch Ratchatahirun; Janjit Lamchaturapatr; Kwannate Sombatsompop; Worsak Kanok-Nukulchai; Lee Inn Beng; Narongrit Sombatsompop (Online Inf. Rev., 2013)