@inproceedings{ DworkHPW92,
    author = "Cynthia Dwork and Maurice Herlihy and Serge A. Plotkin and Orli Waarts",
    title = "Time-Lapse Snapshots",
    booktitle = "Israel Symposium on Theory of Computing Systems",
    pages = "154-170",
    year = "1992",
    url = "citeseer.nj.nec.com/dwork94timelapse.html" }