@misc{romkens_effect_of_1997, 
author={Romkens, P. F.,Plicht, J.van der,Salomons, W.},
title={Effect of land use changes on metal solubility and speciation in soils},
year={1997},
howpublished = {book part},
note = {Online available at: \url{} (DOI). Romkens, P.; Plicht, J.; Salomons, W.: Effect of land use changes on metal solubility and speciation in soils. In: Rogaar, H.; Heuvel-Pieper, A. (Ed.): Speciation and bioavailability of heavy metals, sulphur, phosphorus and cyanide in soils and sediments. 1997. 67-76.}}