Pongchart Burannaprasertsuk และ Warinthorn Chavasiri. (2007) Catalytic epoxidation with cobalt (II) calix[4]pyrrol and cobalt (II) schiff base complexes. Chulalongkorn University:ม.ป.ท.Pongchart Burannaprasertsuk และ Warinthorn Chavasiri. 2007. Catalytic epoxidation with cobalt (II) calix[4]pyrrol and cobalt (II) schiff base complexes. ม.ป.ท.:Chulalongkorn University;Pongchart Burannaprasertsuk และ Warinthorn Chavasiri. Catalytic epoxidation with cobalt (II) calix[4]pyrrol and cobalt (II) schiff base complexes. ม.ป.ท.:Chulalongkorn University, 2007. Print.