conf/sigmod/87 Margaret H. Butler Storage Reclamation in Object Oriented Database Systems. 410-425 1987 SIGMOD Conference db/conf/sigmod/sigmod87.html#Butler87 SIGMOD87/P410.PDF http://doi.acm.org/10.1145/38713.38757 db/conf/sigmod/Butler87.html journals/cacm/Baker78 conf/pods/BancilhonK86 conf/sigmod/BancilhonR86 journals/toplas/BobrowC79 conf/oopsla/BobrowKKMSZ86 ... journals/spe/CockshottACBM84 journals/csur/Cohen81 conf/sigmod/CopelandM84 ... journals/cacm/DeutschB76 books/aw/GoldbergR83 journals/cacm/LiebermanH83 ... ... ... conf/sigmod/StonebrakerR86 ... conf/sde/Ungar84 conf/eds/ZanioloABCM84