@Article{doemJ,
  author =	 {Sudarshan S. Chawathe and Serge Abiteboul and
                  Jennifer Widom},
  title =	 {Managing Historical Semistructured Data},
  journal =	 {Theory and Practice of Object Systems},
  year =	 1999,
  volume =	 5,
  number =	 3,
  month =	 aug,
  pages =	 {143--162}
}