@article{s11270-006-9295-7,
author = "KhalidSaifullah Khan and Krishan Chander and Gerald Hartmann and Norbert Lamersdorf and RainerGeorg Joergensen",
doi = "10.1007/s11270-006-9295-7",
issn = "0049-6979",
journal = "Water, Air, and Soil Pollution",
keywords = "sewage sludge; river sediments; exhaust dust; heavy metals",
number = "1-4",
pages = "225-234",
publisher = "Kluwer Academic Publishers",
title = "{S}ources of {H}eavy {M}etals and {T}heir {L}ong-term {E}ffects on {M}icrobial {C}, {N} and {P} {R}elationships in {S}oil",
url = "http://dx.doi.org/10.1007/s11270-006-9295-7",
volume = "181",
year = "2007",
}