@article{Królik:2019,
  author  = "D. Królik and P. Wypych and J. Kostecki",
  title   = "Sewage sludge management in a sewage treatment plant",
  journal = "Civil and Environmental Engineering Reports",
  volume  = "Vol. 29",
  number  = "iss. 3",
  pages   = "209--217",
  year    = "2019",
}