• Development of Estonian nutrient discharge standards for wastewater treatment plantsNiine, Raili; Loigu, Enn; Tang, Walter ZhonghongEstonian journal of engineering2013 / p. 152-168 : ill https://doi.org/10.3176/eng.2013.2.05 https://www.scopus.com/record/display.uri?eid=2-s2.0-84878820928&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.3176%2Feng.2013.2.05%29&sessionSearchId=08e7c58f88aea92900d731f06ee215ed