@electronic{webis.de,
   title       = {Web Technology & Information Systems}, 
   url         = {http://webis.de/tir-09},
   biburl      = {https://puma.uni-kassel.de/url/5c48b8a5f76777a570040d5e3c16041a/hotho},
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@electronic{www.aisearch.de,
   title       = {TIR-07}, 
   url         = {http://www.aisearch.de/tir-07/},
   biburl      = {https://puma.uni-kassel.de/url/0b7f684b6d256f0e55ee418154abcd34/hotho},
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@electronic{www.bork.embl-heidelberg.de,
   title       = {Literature mining for the biologist: from information retrieval to biological discovery}, 
   url         = {http://www.bork.embl-heidelberg.de/Docu/literature_mining/},
   biburl      = {https://puma.uni-kassel.de/url/86c7bcc2c007b3b0e0ccee113b69a8c9/hotho},
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