@INPROCEEDINGS{R94, author = {Norbert Ritter}, title = {Supporting Cooperative Work by Conventional Database Transactions}, booktitle = {Proc. 7th Int. Conf. on Systsems Research, Informatics and Cybernetics, Advances in Database and Expert Systems}, year = {1994}, editor = {G.E. Lasker}, pages = {169-175}, organization = {Int. Institute for Advanced Studies in Systems Research and Cybernetics} }