deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index c327d59..84bad04 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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}  @Article{Griffiths1994,  author = {D. J. Griffiths} Griffiths},  year = {1994},  title = {See for example, Introduction to Quantum Mechanics" (first Edition) by D. J. Griffiths}  }