No description available of Rul Gunzenhauser...
Ressel, Matthias and Gunzenhauser, Rul (1999): Reducing the Problems of Group Undo. In: Proceedings of the International ACM SIGGROUP Conference on Supporting Group Work 1999 November 14-17, 1999, Phoenix, Arizona, USA. pp. 131-139. Available online
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Ressel, Matthias, Nitsche-Ruhland, Doris and Gunzenhauser, Rul (1996): An Integrating, Transformation-Oriented Approach to Concurrency Control and Undo in Group Editors. In: Olson, Gary M., Olson, Judith S. and Ackerman, Mark S. (eds.) Proceedings of the 1996 ACM conference on Computer supported cooperative work November 16 - 20, 1996, Boston, Massachusetts, United States. pp. 288-297. Available online
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