Szuszkiewicz, Ewa, and Najbar Bartlomiej. “ENVIRONMENTAL PROTECTION IN THE PROJECT „BALANCED DEVELOPMENT IN THE SPREE-NEISSE-BOBER EUROREGION””. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, vol. 1, June 1999, pp. 196-05, https://doi.org/10.17770/etr1999vol1.1875.