Teirumnieks, E., and Ē. Abricka. 2006. “Analyze of Leachate Composition in the Dumpsites of East-Latgale Region”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June): 276-83. https://doi.org/10.17770/etr2003vol1.2018.