conf/sigmod/81 Richard Edwin Stearns Daniel J. Rosenkrantz Distributed Database Concurrency Controls Using Before-Values. 74-83 1981 SIGMOD Conference db/conf/sigmod/sigmod81.html#StearnsR81 SIGMOD81/P074.PDF http://doi.acm.org/10.1145/582318.582330 db/conf/sigmod/StearnsR81.html conf/vldb/BayerEHR80 journals/tods/BayerHR80 conf/vldb/BernsteinG80a ... journals/cacm/EswarranGLT76 conf/ac/Gray78 ... journals/cacm/Lamport78 ... journals/tods/RosenkrantzSL78 journals/siamcomp/RosenkrantzSL84 conf/focs/StearnsLR76 conf/berkeley/StonebrakerN77