Nutrient retention and export to surface waters in Lithuanian and Estonian river basinsPovilaitis, Arvidas; Stalnacke, Per; Vassiljev, AnatoliHydrology research2012 / lk. 359-373 : ill https://iwaponline.com/hr/article/43/4/359/977/Nutrient-retention-and-export-to-surface-waters-in

Source apportionment of nitrogen in Estonian riversKaur, Katrin; Vassiljev, Anatoli; Annus, Ivar; Stalnacke, PerJournal of water supply : research and technology - AQUA2017 / p. 469-480 https://doi.org/10.2166/aqua.2017.036

Use of nonlinear regression for estimating emission of nitrogen to Estonian riversVassiljev, Anatoli; Annus, Ivar; Kaur, Katrin; Kändler, NilsEcology & safety2017 / p. 33-40 : ill https://www.scientific-publications.net/en/article/1001351/