Chaiyasat, A.; Cheanjai, R.; Kaewdee, P.; Threeprom, J.; Chaiyasat, P. Hollow Poly-L-Lactic Acid Microbead Prepared by Phase Inversion Emulsification Technique With a Simple Solvent Evaporation. J Appl Res Sci Tech 2018, 17, 41-53.