@electronic{conexp.sourceforge.net,
   title       = {Conexp Documentation}, 
   url         = {http://conexp.sourceforge.net/users/documentation/index.html#Saving+a+document},
   biburl      = {https://puma.uni-kassel.de/url/96eb61119a0c580a7325016e6d3911ff/stephandoerfel},
   keywords    = {ConExp Conexp conexp documentation doku export fca file import lattice program software},
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   description = {Documentation of Conexp including the file import and export formats},
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@electronic{rapid-i.com,
   title       = {Rapid - I - RapidMiner}, 
   url         = {http://rapid-i.com/content/view/181/190/},
   biburl      = {https://puma.uni-kassel.de/url/7f51ea2abf939e4bb408e7c8f0a6ba32/stephandoerfel},
   keywords    = {kdd program rapid rapidminer software tool},
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}

@electronic{www.google.com,
   title       = {Google Code Search}, 
   url         = {http://www.google.com/codesearch},
   biburl      = {https://puma.uni-kassel.de/url/e1c598f99d0bcd251e7c2bbb878b829a/hotho},
   keywords    = {code search programming software program},
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