Temenuzhka Radoykova (2017). IMPROVEMENT OF OPERATIONAL PROPERTIES OF WOOD MATERIALS BY MODIFICATION THROUGHT THE PENETRATION METHOD. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Nano, Bio and Green - Technologies for a Sustainable Future, 579-586. https://doi.org/10.5593/sgem2017h/63/s26.073