deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 978b8b7..e911d1d 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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@BOOK{Ashcroft_2003,  title = {{Solid State Physics}},  author = {Neil W. Ashcroft}, Ashcroft and N. David Marmin},  publisher = {Thomson Press (India) Ltd},  year = {2003},  month = {12},