deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index bfc2a6e..4086ee3 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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year = {2007},  publisher = {Springer Science \& Business Media},  }  @article{duchowski2002breadth,  title = {{A breadth-first survey of eye-tracking applications}},  author = {Duchowski, Andrew T},  journal = {Behavior Research Methods, Instruments, \& Computers},  volume = {34},  number = {4},  pages = {455--470},  year = {2002},  publisher = {Springer},  }