Thatthai Pengpong และ Polkit Sangvanich. (2012) Encapsulation and controlled release of piperine using hydrogel chitosan nanoparticles. Chulalongkorn University:ม.ป.ท.Thatthai Pengpong และ Polkit Sangvanich. 2012. Encapsulation and controlled release of piperine using hydrogel chitosan nanoparticles. ม.ป.ท.:Chulalongkorn University;Thatthai Pengpong และ Polkit Sangvanich. Encapsulation and controlled release of piperine using hydrogel chitosan nanoparticles. ม.ป.ท.:Chulalongkorn University, 2012. Print.