# of records = 9
homepages/63/2921 journals/dke/LuN09 conf/dasfaa/LuKCN07 conf/er/LuN07a conf/er/LuN07 conf/sigmod/ChengKNL07 conf/apccas/LuL06a conf/er/LuN05 conf/er/LuN04
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