1. Sturman B (1982) VARIAN Inst at work AA-26
2. Berndt H, Jackwerth E (1978) Fresenius Z Anal Chem 290:105–106
3. Berndt H, Slavin W (1978) At Absorbt Newsl 17:5
4. Mori S, Sigl W, Welz B, Wiedeking E (1979) Angew Atom Absorptions-Spektroscopy 13E
5. Voth L (1981) VARIAN Inst at work AA-13