1. Schladot JD, Stoeppler M, Kloster G, Schwuger MJ (1992) Analusis 20:M45-M49
2. Rossbach M, Ostapczuk P, Schladot JD (Eds.) (1992) Specimen banking, environmental monitoring and modern analytical approaches. Springer, Heidelberg
3. Waidmann E, Hilpert K, Schladot JD, Stoeppler M (1984) Fresenius Z Anal Chem 317:273?277
4. Hilpert K, Waidmann E (1986) Fresenius Z Anal Chem 325:141?145
5. Waidmann E, Hilpert K, Stoeppler M (1990) Fresenius J Anal Chem 337:134?135