@article{KleespiesGuebertPoppetal.2020,
  author    = {Matthias Kleespies and Jennifer G{\"u}bert and Alexander Popp and Nicola Hartmann and Christian Dietz and Tanja Spengler and Martin Becker and Paul Wilhelm Dierkes},
  title     = {Connecting high school students with nature - how different guided tours in the zoo influence the success of extracurricular educational programs},
  journal   = {Frontiers in psychology},
  volume    = {11},
  number    = {1804},
  doi       = {10.3389/fpsyg.2020.01804},
  year      = {2020},
}