Immobilization of heavy metals in the slags from $Zn-Pb$ metallurgical plant in Bukowno, Poland / WÓJCIK R., HELIOS-RYBICKA E., Dukiewicz M. // Mineralia Slovaca ; ISSN 0369-2086. — 2001 vol. 33 no. 2 dod.: Geovestník, s. 23. — Abstrakt referatu z: Konferencia doktorandov a mladých vedeckých pracovníkov : Harl'any 23.–24. apríla 2001

Leachability of Zn, Cd and Pb from wastes at the Bukowno (Upper Silesia) mining and smelting industry / Rafał WÓJCIK, Edeltrauda HELIOS-RYBICKA, Monika Dukiewicz // W: Biogeochemical processes and cycling of elements in the environment : ISEB15 : proceedings of the 15\textsuperscript{th} International Symposium on Environmental Biogeochemistry : Wrocław, Poland, September 11–15, 2001 / eds. Jerzy Weber, [et al.]. — Wrocław : PTSH – Polish Society of Humic Substances, 2001. — ISBN10: 83-906403-5-X. — S. 119–120. — Bibliogr. s. 120

Total and bioavailable fraction of heavy metals in the Odra river solids / E. HELIOS-RYBICKA, E. ADAMIEC // W: Biogeochemical processes and cycling of elements in the environment : ISEB15 : proceedings of the 15\textsuperscript{th} International Symposium on Environmental Biogeochemistry : Wrocław, Poland, September 11–15, 2001 / eds. Jerzy Weber, [et al.]. — Wrocław : PTSH – Polish Society of Humic Substances, 2001. — ISBN10: 83-906403-5-X. — S. 175–176. — Bibliogr. s. 176