Long-term monitoring of nutrient losses from agricultural catchments in the Nordic–Baltic region – a discussion of methods, uncertainties and future needsKyllmar, Katarina; Bechmann, Marianne; Deelstra, Johannes; Iital, Arvo; Blicher-Mathiesen, Gitte; Jansons, Viesturs; Koskiaho, Jari; Povilaitis, ArvydasAgriculture, ecosystems and environment2014 / p. 4-12 : ill https://doi.org/10.1016/j.agee.2014.07.005 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS