Dahle, S., L. Wegewitz, W. Viöl, and W. Maus-Friedrichs. “ Formation of Silver Nanoparticles on Lignin and Two of Its Precursors”. Les/Wood, Vol. 70, no. 1, May 2021, pp. 59-72, doi:10.26614/les-wood.2021.v70n01a03.