Gerhard Weikum Andrew Deacon Werner Schaad Hans-Jörg Schek Open Nested Transactions in Federated Database Systems. 4-7 1993 16 IEEE Data Eng. Bull. 2 DEBU/93JUN-CD.PDF db/journals/debu/debu16.html#WeikumDSS93 http://sites.computer.org/debull/93JUN-CD.pdf conf/vldb/AnsariNRS92 journals/jacm/BeeriBG89 conf/edbt/BeeriSW88 journals/vldb/BreitbartGS92 journals/tse/BreitbartGRS91 conf/vldb/DayalHL91 ... books/mk/Elmagarmid92 conf/sigmod/Garcia-MolinaS87 journals/debu/Garcia-MolinaGKKS91 journals/tse/Gray86 ... books/mk/GrayR93 conf/podc/LevyKS91 conf/icde/MuthRWBH93 conf/vldb/Raz92 ... ... conf/pods/SchekWY93 books/mk/elmagarmid92/VeijalainenEH92 books/mk/elmagarmid92/WachterR92 journals/tods/Weikum91 journals/vldb/WeikumH93 books/mk/elmagarmid92/WeikumS92