Theerawat Tonsawan และ Supawan Tantayanon. (2010) Synthesis and characterization of poly(vinyl alcohol) containing long-chain alkoxy coumarins. Chulalongkorn University:ม.ป.ท.Theerawat Tonsawan และ Supawan Tantayanon. 2010. Synthesis and characterization of poly(vinyl alcohol) containing long-chain alkoxy coumarins. ม.ป.ท.:Chulalongkorn University;Theerawat Tonsawan และ Supawan Tantayanon. Synthesis and characterization of poly(vinyl alcohol) containing long-chain alkoxy coumarins. ม.ป.ท.:Chulalongkorn University, 2010. Print.