Cleanup of this entry should remove the URL field and not keep it.
Preferences have to be "[ ] Include empty fields" (at Preferences -> File)
TODO: This test is not yet implemented

@article{test,
year={2007},
issn={1066-8888},
journal={The VLDB Journal},
volume={16},
number={3},
doi={10.1007/s00778-007-0044-3},
title={Service oriented architectures: approaches, technologies and research issues},
url={http://dx.doi.org/10.1007/s00778-007-0044-3},
publisher={Springer-Verlag},
keywords={Service oriented architecture; Asynchronous and event-driven processing; Application and service integration; Enterprise bus; Web services},
author={Papazoglou, MikeP. and van den Heuvel, Willem-Jan},
pages={389-415},
language={English}
}
