@misc{wietstock_process_for_1997, 
author={Wietstock, P.,Wrage, B.,Luther, G.,Niemeyer, B.,Gronholz, C.},
title={Process for separation of volatile pollutants from contaminated materials, soil, wood, sludge and sediments},
year={1997},
howpublished = {conference paper,conference lecture,GKSS report: Rotterdam (NL); September 7-11, 1997},
note = {Online available at: \url{} (DOI). Wietstock, P.; Wrage, B.; Luther, G.; Niemeyer, B.; Gronholz, C.: Process for separation of volatile pollutants from contaminated materials, soil, wood, sludge and sediments. In: ICCS International Conference on Contaminated Sediments, Restoration and Management. Rotterdam (NL). 1997. 444-451.}}