Carl-Alexander Wichert Burkhard Freitag Alfred Fent Logical Transactions and Serializability. 134-165 1998 conf/dagstuhl/1998change Transactions and Change in Logic Databases http://link.springer.de/link/service/series/0558/bibs/1472/14720134.htm db/conf/dagstuhl/change9697.html#WichertFF98