Non-violence in international crises : proceedings of the First International Symposium on Non-Violent Solutions of International Crises and Regional Conflicts, Frankfurt am Main, February 1989 - Degan, Vladimir Đuro; Czempiel, Ernst-Otto; Kjuzadžjan, Liparit Sarkisovič; Masopust, Zdenek (International Social Science Council, European Coordination Centre for Research and Documentation in Social Sciences : Hessische Stiftung für Friedens- und Konfliktforschung, 1990)