A. A. Tanjung, J. Julinawati, W. Fatriasari, Z. Helwani, A. A. Kacaribu, and R. Idroes, “Context-Dependent Effects of PEG Grade on Lignocellulose Fractionation with Deep Eutectic Solvents ”, Leuser J. Environ. Stud., vol. 4, no. 2, pp. 126–150, Oct. 2026.