%0 Journal Article %T Dissident Groups, Personal Networks, and Spontaneous Cooperation: The East German Revolution of 1989 %A Opp, Karl-Dieter %A Gern, Christiane %A , %J American Sociological Review %V 58 %N 5 %P 659 %@ 0003-1224 %D 1993-10-01 %I SAGE Publications %~ DeepDyve