@article{Wolters1999,
  author    = {Wolters, Dirk},
  title     = {Biomasse : {\"o}kologisch und sozial vertr{\"a}glich},
  journal   = {Umwelt - kommunale {\"o}kologische Briefe},
  volume    = {4},
  number    = {25-26},
  pages     = {16 -- 17},
  year      = {1999},
  language  = {de}
}