@article{WoelflTittelZippeletal.2000,
  author    = {W{\"o}lfl, S. and Tittel, J{\"o}rg and Zippel, Barbara and Kringel, R.},
  title     = {Occurrence of an algal mass development in an acidic (pH 2.5), iron and aluminium-rich coal mining pond},
  year      = {2000},
  language  = {en}
}