@InBook{phic-ssd,
  author =	 {Sudarshan S. Chawathe},
  editor =	 {Munindar P. Singh},
  title = 	 {Semistructured Data in Relational Databases},
  chapter = 	 3,
  publisher = 	 {CRC Press},
  series =	 {Practical Handbook of Internet Computing},
  year = 	 2004
}