deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index e8888c5..dfb6a52 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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url = {http://necemonyai.com/blog/post/Phidgets-First-Steps-In-Robotics.aspx},  }  @ONLINE{Google:2013:Online,  author = {Google},  title = {{Use Leap Motion with Google Earth (https://support.google.com/earth/answer/3401497?hl=en)}},  year = {2013},  url = {https://support.google.com/earth/answer/3401497?hl=en},  }  @article{Kim_2008,  title = {{The impact of tangible user interfaces on spatial cognition during collaborative design}},  volume = {29},  issn = {0142-694X},  url = {http://dx.doi.org/10.1016/j.destud.2007.12.006},  doi = {10.1016/j.destud.2007.12.006},  number = {3},  journal = {Design Studies},  publisher = {Elsevier BV},  author = {Kim Mi Jeong and Maher, Mary Lou},  year = {2008},  month = {May},  pages = {222–253},  }