@article{BOeNINGLOHSEHARTMANN2001,
  author    = {B{\"O}NING, T. and LOHSE, M. and HARTMANN, B.},
  title     = {Was leisten naturnahe Verfahren?},
  series = {wwt-awt},
  journal   = {wwt-awt},
  number    = {5},
  pages     = {18 -- 22},
  year      = {2001},
  language  = {mul}
}