Figure 4
From: Detecting anomalous citation groups in journal networks

Citation groups detected by CIDRE. The circles indicate journals. The color of edges indicates the source of citations. The width of edges is proportional to the number of citations made between two journals. Self-citation edges are omitted. The pie in color within each circle indicates the share of citations from the citing journal from the viewpoint of the cited journal. The white pie within each circle indicates the share of citations from outside the group. The journals on the left and right arcs indicate the donor and recipient, respectively. The journals that are simultaneously donor and recipient are located where the arcs overlap. The journals outside the group are agglomerated into a gray-colored circle at the bottom of each panel.