@article{Schwab2015, author = "Christine Schwab and Ruth Swoboda and Kurt Kotrschal and Thomas Bugnyar", title = "{Actors' choices by first approach, condition, and sex of actors.}", year = "2015", month = "12", url = "https://plos.figshare.com/articles/figure/_Actors_choices_by_first_approach_condition_and_sex_of_actors_/324909", doi = "10.1371/journal.pone.0034922.g004" }