Skudra S, Shulga G, Shakels V, Belkova L, Reihmane S. Properties of Isolated Lignin From Model Wastewater. ETR [Internet]. 2015 Aug. 5 [cited 2024 Aug. 17];1:282-7. Available from: https://journals.ru.lv/index.php/ETR/article/view/921