Ratnawati, R., Wulandari, R., Kumoro, A. C., & Hadiyanto, H. (2022). Response Surface Methodology for Formulating PVA/Starch/Lignin Biodegradable Plastic. Emerging Science Journal, 6(2), 238–255. https://doi.org/10.28991/ESJ-2022-06-02-03