deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index a25fff7..943a36b 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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year = {2013},  url = {http://www.ti.com/lit/ds/symlink/uln2003a.pdf},  }  @misc{FairchildSemiconductor:2010,  author = {Fairchild Semiconductor},  title = {{LM2904,LM358/LM358A,LM258/ LM258A Dual Operational Amplifier}},  howpublished = {Web},  year = {2010},  url = {http://www.fairchildsemi.com/ds/LM/LM258.pdf},  }