Simangunsong, Daniel I., Try H. A. Hutapea, Hyung Woo Lee, Jung Oh Ahn, and Johnner Sitompul. 2018. “The Effect of Nanocrystalline Cellulose (NCC) Filler on Polylactic Acid (PLA) Nanocomposite Properties”. Journal of Engineering and Technological Sciences 50 (4):578-87. https://doi.org/10.5614/j.eng.technol.sci.2018.50.4.9.