@article{HelmersIlchmann2022,
  author    = {Eckard Helmers and Fabienne Ilchmann},
  title     = {Sustainability subjects in university education - Development of a comprehensive indicator system and quantitative analysis of degree programs at German universities},
  journal   = {European Journal of Sustainable Development Research},
  volume    = {3},
  number    = {4},
  pages     = {1 -- 17},
  doi       = {10.29333/ejosdr/5771},
  year      = {2022},
}