1. R. DYBCZYŃSKI, B. DANKO, H. MALESZEWSKA, J. Anal. Chem. (Moscow), 49 (1994) 31.
2. R. DYBCZYŃSKI, B. DANKO, J. Radioanal. Nucl. Chem., 181 (1994) 43.
3. R. DYBCZYŃSKI, B. DANKO, Biol. Trace Element Research, 43/45 (1994) 615.
4. M. ANKE, C. BINI, Conf. Proc. Heavy Metal Pollution in Eastern and Central Europe, Prague, 11–16 October, 1992, p. 15.
5. Metal and Their Compounds in Environment, E. MERIAN (Ed.) VCH Verlagsgesellschaft, Weinheim, 1991.