The Baseline Clock.

@incollection{DBLP:books/kl/snodgrass95/DyresonS95,
  author    = {Curtis E. Dyreson and
               Richard T. Snodgrass},
  title     = {The Baseline Clock},
  booktitle = {The TSQL2 Temporal Query Language},
  year      = {1995},
  pages     = {73-92},
  ee        = {db/books/collections/snodgrass95/DyresonS95.html},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

ACM SIGMOD Anthology

• Windows: Click the letter of your CD drive
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
• Mac: Click here
• UNIX/LINUX: mount the CD and click on the path of your mount point:
  /Anthology/An5-1 or /cdrom

• Windows: Click the letter of your CD drive
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
• Mac: Click here
• UNIX/LINUX: mount the DVD and click on the path of your mount point:
  /Anthology/aDVD2 or /dvd