Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

	1	Daniel M. Bikel , Scott Miller , Richard Schwartz , Ralph Weischedel, Nymble: a high-performance learning name-finder, Proceedings of the fifth conference on Applied natural language processing, p.194-201, March 31-April 03, 1997, Washington, DC  [doi>10.3115/974557.974586]
	2	Andrei Broder, A taxonomy of web search, ACM SIGIR Forum, v.36 n.2, Fall 2002  [doi>10.1145/792550.792552]
	3	Soumen Chakrabarti , Martin van den Berg , Byron Dom, Focused crawling: a new approach to topic-specific Web resource discovery, Proceeding of the eighth international conference on World Wide Web, p.1623-1640, May 1999, Toronto, Canada
	4	Collins-Thompson, K., & Callan, J. A language modeling approach to predicting reading difficulty. Proceedings of HLT/NAACL 2004, Boston, USA, 2004.
	5	Finn, A., Kushmerick, N. & Smyth, B. Fact or fiction: Content classification for digital libraries. Joint DELOS-NSF Workshop on Personalisation and Recommender Systems in Digital Libraries (Dublin), 2001.
	6	Foltz, P. W., Kintsch, W., Landauer, T. K. Analysis of text coherence using Latent Semantic Analysis. Discourse Processes 25(2--3), 285--307, 1998.
	7	Google Kids Directory. http://directory.google.com/Top/Kids_and_Teens/
	8	Victor Lavrenko , W. Bruce Croft, Relevance based language models, Proceedings of the 24th annual international ACM SIGIR conference on Research and development in information retrieval, p.120-127, September 2001, New Orleans, Louisiana, United States  [doi>10.1145/383952.383972]
	9	Ogilvie, P. and Callan, J. Experiments using the Lemur Toolkit. In Proc.of the 10th Text Retrieval Conference, TREC 2001. NIST Special Publication 500--250, 103--108, 2001.

• Data structures for quadtree approximation and compression Communications of the ACM   28, 9
  Hanan Samet
  
  
• A hierarchical single-key-lock access control using the Chinese remainder theorem Proceedings of the 1992 ACM/SIGAPP Symposium on Applied computing
  Kim S. Lee ,  Huizhu Lu ,  D. D. Fisher
  
  
• The GemStone object database management system Communications of the ACM   34, 10
  Paul Butterworth ,  Allen Otis ,  Jacob Stein
  
  
• Putting innovation to work: adoption strategies for multimedia communication systems Communications of the ACM   34, 12
  Ellen Francik ,  Susan Ehrlich Rudman ,  Donna Cooper ,  Stephen Levine
  
  
• An intelligent component database for behavioral synthesis Proceedings of the 27th ACM/IEEE Design Automation Conference on
  Gwo-Dong Chen ,  Daniel D. Gajski