Jariyaporn Pomsook และ Nuanphun Chantarasiri. (2010) Preparation of rigid polyurethane foam using mixed metal complexes and ethylenediamine as catalysts. Chulalongkorn University:ม.ป.ท.Jariyaporn Pomsook และ Nuanphun Chantarasiri. 2010. Preparation of rigid polyurethane foam using mixed metal complexes and ethylenediamine as catalysts. ม.ป.ท.:Chulalongkorn University;Jariyaporn Pomsook และ Nuanphun Chantarasiri. Preparation of rigid polyurethane foam using mixed metal complexes and ethylenediamine as catalysts. ม.ป.ท.:Chulalongkorn University, 2010. Print.