@electronic{www.cs.albany.edu,
   title       = {Agglomerative Hierarchical Clustering with Constraints: Theoretical and Empirical Results}, 
   url         = {http://www.cs.albany.edu/~davidson/Publications/hierCameraReady.pdf},
   biburl      = {https://puma.uni-kassel.de/url/a796db85fa7a1dfa7baa626152f72578/hotho},
   keywords    = {clustering to:bibtex constraints hierarchical},
   added-at    = {2006-09-04T15:46:22.000+0200},
   description = {Agglomerative Hierarchical Clustering with Constraints: Theoretical and Empirical Results 

Ian Davidson1  and S.S. Ravi1 
(1) 	Department of Computer Science, University at Albany - State University of New York, Albany, NY 12222,  },
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}

@electronic{www.sitepoint.com,
   title       = {Storing Hierarchical Data in a Database}, 
   url         = {http://www.sitepoint.com/print/hierarchical-data-database},
   biburl      = {https://puma.uni-kassel.de/url/525e8fe1188cad8723c2d2dbee9e0ba0/hotho},
   keywords    = {storing data database hierarchical},
   added-at    = {2005-08-12T15:53:07.000+0200},
   description = {},
   interhash   = {525e8fe1188cad8723c2d2dbee9e0ba0}, 
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}