@article{OnRiScWaJ09,
  author = {Ontrup, J. and Ritter, H. and Scholz, S. and Wagner, R.},
  interhash = {79ae991c8f60b229467edd4f408db77a},
  intrahash = {fb62204db921296f4ed9701cd9eaabae},
  journal = {{IEEE} {T}ransactions on {K}nowledge and {D}ata {E}ngineering},
  number = 3,
  pages = {415 - 427},
  title = {{D}etecting, {A}ssessing and {M}onitoring {R}elevant {T}opics in {V}irtual {I}nformation {E}nvironments},
  volume = 21,
  year = 2009
}