@article{FiedlerHeyneBogner2021,
  author    = {Sonja T. Fiedler and Thomas Heyne and Franz X. Bogner},
  title     = {COVID-19 and lockdown schooling: how digital learning environments influence semantic structures and sustainability knowledge},
  journal   = {Discover Sustainability},
  volume    = {2},
  doi       = {10.1007/s43621-021-00041-y},
  year      = {2021},
}