Semantic Query Formulation and Evaluation for XML Databases. - Pongtawat Chippimolchai; Vilas Wuwongse; Chutiporn Anutariya (WISE, 2002)

A Comparison of Constraint Handling Rules with Equivalent Transformation Rules. - Yoshinori Shigeta; Kiyoshi Akama; Pongtawat Chippimolchai; Takahiko Ishikawa (MSV/AMCS, 2004)

Towards Semantic Query Optimization for XML Databases. - Pongtawat Chippimolchai; Vilas Wuwongse; Chutiporn Anutariya (ICDE Workshops, 2005)

Semantic Query Optimization: Correctness and Control. - Pongtawat Chippimolchai; Kiyoshi Akama; Vilas Wuwongse (J. Adv. Comput. Intell. Intell. Informatics, 2006)