Rapid quantitative determination of lignin in lignocellulosic productsKärner, Kärt; Kärner, Kristi; Kallavus, Urve; Elomaa, Matti AnteroBaltic Polymer Symposium 2014 : programme and abstracts : Laulasmaa, Estonia, September 24-26, 20142014 / p. 56 Rapid semi-quantitative determination of aspen lignin in lignocellulosic productsKallavus, Urve; Kärner, Kristi; Kärner, Kärt; Elomaa, Matti AnteroProceedings of the Estonian Academy of Sciences2015 / p. 105-112 : ill http://dx.doi.org/10.3176/proc.2015.1S.06