1. Arsenic round the world: a review
2. 2. M. Ihnat, “Hazardous Metals in the Environment”, ed. M. Stoeppler, 1992, Chap. 16, Elsevier, Amsterdam, 475.
3. 3. W. Goessler and D. Kuehnelt, “Environmental Chemistry of Arsenic”, ed. W. T. Frankenberger, 2002, Chap. 2, Marcel Dekker, New York, 27.
4. Critical ReviewDetermination of Selenium and Tellurium in Environmental Samples
5. 5. T. Nakahara, “Advances in Atomic Spectroscopy”, ed. J. Sneddon, 1995, Vol. 2, Jai Press Inc., Greenwich, 139.