1. Arsenic levels in fingernails as biological indicator of exposure to arsenic;Agahain;Am. Ind. Hyg. Assoc. J.,1990
2. Mercury in hair as an indicator of total body burden;Al-Sharistani,1974
3. Haaranalysse und Spurenelementstatus;Anke,1979
4. FIXE and neutron activation methods in human hair material analysis;Badica;Nucl. Instr. Math. Physics Res.,1984
5. Effects of fluorine emissions on the living organism;Baláz̆ová;Fluoride,1969