1. The content and chemical forms of heavy metals in the river sediments of the Cracow area; the role of clay minerals;Helios Rybicka;Environ. Tech. Lett.,1983
2. The role of clay minerals in the fixation of heavy metals in bottom sediments of the Upper Vistula River;Helios Rybicka;Geologia,1986
3. Phase specific bonding of heavy metals in sediments of the Vistula River, Poland;Helios Rybicka;Appl. Geoch.,1993
4. Heavy metals in the Vistula River and its tributary of the Kraków area;Helios Rybicka;Przegi. Geol.,1989
5. The trace elements in waters of the Bystra River catchment (Lublin Highland);Kabata Pendias;Roczn. Gleb.,1979