Ghahri, S. ., and B.-D. . Park. “Ether Bond Formation in Waste Biomass–Derived, Value-Added Technical Hardwood Kraft Lignin Using Glycolic Acid”. Journal of Research Updates in Polymer Science, vol. 12, Nov. 2023, pp. 171-9, doi:10.6000/1929-5995.2023.12.14.