Szuszkiewicz, E. and Bartlomiej, N. 1999. ENVIRONMENTAL PROTECTION IN THE PROJECT „BALANCED DEVELOPMENT IN THE SPREE-NEISSE-BOBER EUROREGION”. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference. 1, (Jun. 1999), 196–205. DOI:https://doi.org/10.17770/etr1999vol1.1875.