@article{KlapperBoehrerPackroffetal.2001,
  author    = {H. Klapper and Bertram Boehrer and G. Packroff and M. Schultze and J{\"o}rg Tittel and Katrin Wendt-Potthoff},
  title     = {Bergbaufolgegew{\"a}sser},
  year      = {2001},
}