@misc{indiciae192506aa0173,
  title = {Activated sludge modelling: past, present and future.},
  author = {W Gujer},
  year = {2006},
  doi = {10.2166/wst.2006.082},
  url = {https://pubmed.ncbi.nlm.nih.gov/16605023/},
  note = {Source identifier: 16605023}
}