Impact of changes in nutrient inputs to the water quality of the shallow Haapsalu Bay, the Baltic SeaIital, Arvo; Brandt, Nils; Gröndahl, Fredrik; Loigu, Enn; Klõga, MarijaJournal of environmental monitoring2010 / 8, p. 1531-1536 : ill https://pubmed.ncbi.nlm.nih.gov/20577689/

Recent trends in nutrient concentrations in Estonian rivers as a response to large-scale changes in land-use intensity and life-stylesIital, Arvo; Pachel, Karin; Loigu, Enn; Pihlak, Margus; Leis, ÜlleJournal of environmental monitoring2010 / 1, p. 178-188 : ill