Wittaya Pengjam และ Nuanphun Chantarasiri. (2010) Preparation of rigid polyurethane foam catalyzed by Cu-amine and Mn-amine complexes. Chulalongkorn University:ม.ป.ท.Wittaya Pengjam และ Nuanphun Chantarasiri. 2010. Preparation of rigid polyurethane foam catalyzed by Cu-amine and Mn-amine complexes. ม.ป.ท.:Chulalongkorn University;Wittaya Pengjam และ Nuanphun Chantarasiri. Preparation of rigid polyurethane foam catalyzed by Cu-amine and Mn-amine complexes. ม.ป.ท.:Chulalongkorn University, 2010. Print.