Liyin Xue Mehmet A. Orgun Kang Zhang A Multi-Versioning Scheme for Intention Preservation in Collaborative Editing Systems. 509-551 2008 17 Computer Supported Cooperative Work 5-6 http://dx.doi.org/10.1007/s10606-008-9076-5 db/journals/cscw/cscw17.html#XueOZ08