V. A. Veshnyakov (2018). THE ACTION OF NITRIC ACID ON LIGNIN IN A WATER-DIMETHYL SULFOXIDE MIXTURE. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th SGEM International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies, 127-134. https://doi.org/10.5593/sgem2018v/4.3/s05.016