The use of protest event data in comparative research: cross-national comparability, sampling methods and robustness - Ruud Koopmans (Acts of dissent: new developments in the study of protest, 1998)
Keywords: 300; internationaler Vergleich; vergleichende Politikwissenschaft; Protest; soziale Bewegung; Forschung; Methode; Datengewinnung; Stichprobe