Eakasit Namkaeo และ Akawat Sirisuk. (2008) Synthesis and characterization of TiO[subscript 2] hollow spheres using spraying technique. Chulalongkorn University:ม.ป.ท.Eakasit Namkaeo และ Akawat Sirisuk. 2008. Synthesis and characterization of TiO[subscript 2] hollow spheres using spraying technique. ม.ป.ท.:Chulalongkorn University;Eakasit Namkaeo และ Akawat Sirisuk. Synthesis and characterization of TiO[subscript 2] hollow spheres using spraying technique. ม.ป.ท.:Chulalongkorn University, 2008. Print.