deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 3e73260..cef8b5a 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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year = {2007},  pages = {33-40},  }  @article{Nocedal_1980,  title = {{Updating quasi-Newton matrices with limited storage}},  volume = {35},  url = {http://dx.doi.org/10.1090/S0025-5718-1980-0572855-7},  doi = {10.1090/S0025-5718-1980-0572855-7},  number = {151},  journal = {Mathematics of Computation},  publisher = {American Mathematical Society (AMS)},  author = {Nocedal, Jorge},  year = {1980},  month = {Sep},  pages = {773-773},  }