Koatchapan Nimaboot และ Nuanphun Chantarasiri. (2015) Preparation of rigid polyurethane foams catalyzed by delayed action catalyst derived from copper-amine complexes and carboxylic acid. Chulalongkorn University:ม.ป.ท.Koatchapan Nimaboot และ Nuanphun Chantarasiri. 2015. Preparation of rigid polyurethane foams catalyzed by delayed action catalyst derived from copper-amine complexes and carboxylic acid. ม.ป.ท.:Chulalongkorn University;Koatchapan Nimaboot และ Nuanphun Chantarasiri. Preparation of rigid polyurethane foams catalyzed by delayed action catalyst derived from copper-amine complexes and carboxylic acid. ม.ป.ท.:Chulalongkorn University, 2015. Print.