@electronic{nlp.stanford.edu,
   title       = {Stanford NLP Group}, 
   url         = {http://nlp.stanford.edu/software/tregex.shtml},
   biburl      = {https://puma.uni-kassel.de/url/75d24d46c42ba190abc0a866d96b77ca/hotho},
   keywords    = {pos tgrep analyze nlp},
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@electronic{www.stanford.edu,
   title       = {Corpora@Stanford - Tgrep/Tgrep2 Tutorial}, 
   url         = {http://www.stanford.edu/dept/linguistics/corpora/cas-tut-tgrep.html},
   biburl      = {https://puma.uni-kassel.de/url/f24af10d6af58a7ef32d47252826f084/hotho},
   keywords    = {pos tgrep analyze nlp},
   added-at    = {2006-09-15T11:15:28.000+0200},
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