• Temporal trends in nitrogen concentrations and losses from agricultural catchments in the Nordic and Baltic countriesStalnacke, Per; Aakeroy, Paul Andreas; Iital, ArvoAgriculture, ecosystems and environment2014 / p. 94-103 : ill https://doi.org/10.1016/j.agee.2014.03.028 https://www.scopus.com/sourceid/15110 https://www.scopus.com/record/display.uri?eid=2-s2.0-85027957971&origin=inward&txGid=acc673e46390c08fe5adc783e509ed2c https://jcr.clarivate.com/jcr-jp/journal-profile?journal=AGR%20ECOSYST%20ENVIRON&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000347585100011