Thomas Bergstraesser Philip A. Bernstein Shankar Pal David Shutt Versions and Workspaces in Microsoft Repository. 532-533 1999 SIGMOD Conference db/conf/sigmod/sigmod99.html#BergstraesserBPS99 conf/sigmod/99 http://doi.acm.org/10.1145/304182.304248 db/conf/sigmod/BergstraesserBPS99.html DiSC2_1/out/papers/sigmod/versionsandworkthphs.pdf conf/vldb/BernsteinHSSZ97 ... conf/vldb/ChouK86 journals/csur/Katz90 ... books/ms/Rogerson97 journals/vldb/Sciore94