deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index bbbf3ee..301336d 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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year = {2000},  publisher = {Universidad Nacional de Colombia},  }  @article{Van_Aken_2010,  doi = {10.1108/17410401011075648},  url = {http://dx.doi.org/10.1108/17410401011075648},  year = {2010},  month = {sep},  publisher = {Emerald},  volume = {59},  number = {7},  pages = {641--667},  author = {Eileen M. Van Aken and Jennifer A. Farris and Wiljeana J. Glover and Geert Letens},  title = {{A framework for designing managing, and improving Kaizen event programs}},  journal = {Int J Productivity {\&} Perf Mgmt},  }