Virtual mapping of reference conditions of pollutant load in waterbodies : phosphorus in the Lake Peipsi basinPiirimäe, Kristjan; Loigu, Enn; Pachel, Karin; Iital, ArvoBoreal environment research2015 / p. 391-402 : ill http://www.borenv.net/BER/pdfs/ber20/ber20-391.pdf Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS