1. Steinwandter H (1989) Environmental Analysis-Benefits or Damage. Lecture presented at the 101 st VDLUFA Congress in Bayreuth
2. Steinwandter H (1992) Development of micro extraction methods. In: Cairns T, Sherma J (eds) Modern methods of pesticide analysis, Vol 1. CRC Press, Boca Raton, Florida, p 3
3. Steinwandter H (1994) Fresenius J Anal Chem 348:385
4. UBA-Ringversuch (1992) PCDD/PCDF in Kl�rschlamm. Umweltbundesamt, Berlin
5. Kl�rschlammverordnung (1992) Bundesgesetzblatt, part I, pp 912