title: transaction timestamping in ( temporal ) databases. authors: christian s. jensen , david b. lomet. venue: vldb. year: 2001.0
title: on the issue of valid time ( s ) in temporal databases acm sigmod record. authors: stavros kokkotos , efstathios v. ioannidis , themis panayiotopoulos , constantine d. spyropoulos. venue: nan. year: 1995.0