conf/vldb/89 Richard J. Lipton Jeffrey F. Naughton Estimating the Size of Generalized Transitive Closures. 165-171 1989 VLDB db/conf/vldb/vldb89.html#LiptonN89 http://www.vldb.org/conf/1989/P165.PDF conf/vldb/AgrawalJ87 conf/sigmod/Christodoulakis83 conf/vldb/Demolombe80 conf/pods/HouOT88 conf/vldb/Ioannidis86 conf/vldb/IoannidisR88 conf/sigmod/Ioannidis87 conf/vldb/KrishnamurthyBZ86 conf/icde/LuMR87 ... conf/vldb/Lu87 conf/vldb/Lynch88 conf/pods/Naughton87 conf/sigmod/NaughtonRSU89 conf/sigmod/Piatetsky-ShapiroC84 conf/sigmod/RosenthalHDM86 conf/sigmod/Rowe83 journals/ai/SmithG85 conf/sigmod/SwamiG88