Stankevica, Karina, Burlakovs, Juris, Klavins, Maris. "ORGANIC RICH FRESHWATER SEDIMENTS (SAPROPEL) AS POTENTIAL SOIL AMENDMENT FOR RECULTIVATION OF AREAS CONTAMINATED WITH HEAVY METALS." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on WATER RESOURCES. FOREST, MARINE AND OCEAN ECOSYSTEMS, 2013, pp. 595 - 602 pp. https://doi.org/10.5593/sgem2013/bc3/s13.016