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Author clusters
| Cluster number and colour | Authors in the cluster | Label |
|---|---|---|
| 1—Red | European Commission; Habermas; Mair; Mudde; Norris; OECD; Rydgren | Europe and the radical right in Europe |
| 2—Green | Easton; Gleditsch; King; Lijphart; Munck; Sartori | Comparative method |
| 3—Blue | Asal; Hix; Raymond; Usherwood | Education and active learning |
| 4—Yellow | Gerring; Hall; Mahoney | Institutionalisms and qualitative research |
