Peter Pleshachkov Sergei Kuznetcov SXDGL: Snapshot Based Concurrency Control Protocol for XML Data. 122-136 2007 conf/xsym/2007 XSym http://dx.doi.org/10.1007/978-3-540-75288-2_10 db/conf/xsym/xsym2007.html#PleshachkovK07