@article{Wibral2015, author = "Michael Wibral and Nicolae Pampu and Viola Priesemann and Felix Siebenhühner and Hannes Seiwert and Michael Lindner and Joseph T. Lizier and Raul Vicente", title = "{Causal graph for two coupled systems .}", year = "2015", month = "12", url = "https://plos.figshare.com/articles/figure/_Causal_graph_for_two_coupled_systems_/641620", doi = "10.1371/journal.pone.0055809.g002" }