@misc{city2019waste,
  title = {Waste statistics on municipal waste}
  author = {City of Hamburg. Authority for environment and energy},
  url = {https://www.hamburg.de/contentblob/12793290/21203ad2f414c96e53b9bb27539c4b33/data/d-statistik-siedlungsabfall-2018.pdf},
  year = {2019}
}