Fahrullah, F. et al. 2023. The Water Content, Solubility, and Optical Properties of Whey-Gelatin Multilayer Films Enriched with Green Tea Powder. Jurnal Biologi Tropis. 23, 4 (Oct. 2023), 491–499. DOI:https://doi.org/10.29303/jbt.v23i4.5664.