@article{chowdhury1985,
  author  = {Chowdhury, Nasreen},
  title   = {Spectral Analysis Applied to Activated Sludge Treatment},
  journal = {Open Access Journal of Engineering Applications},
  year    = {1985},
  volume  = {9},
  number  = {2},
  pages   = {14-27},
  issn    = {3105-7004},
  doi     = {10.55555/oajea.1985.0902.002},
  url     = {https://journal.bsaps.com/article/6219}
}