Aristri, Manggar Arum, Muhammad Adly Rahandi Lubis, Raden Permana Budi Laksana, Faizatul Falah, Widya Fatriasari, Maya Ismayati, Asri Peni Wulandari, and Nurindah. 2021. “Bio-Polyurethane Resins Derived from Liquid Fractions of Lignin for the Modification of Ramie Fibers”. Jurnal Sylva Lestari 9 (2):223-38. https://doi.org/10.23960/jsl29223-238.