deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 9158524..58e65e2 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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title = {{Programme budgeting and marginal analysis: bridging the divide between doctors and managers}},  journal = {{BMJ}},  }  @article{Birch_1992,  doi = {10.1016/0167-6296(92)90004-k},  url = {http://dx.doi.org/10.1016/0167-6296(92)90004-K},  year = {1992},  month = {oct},  publisher = {Elsevier {BV}},  volume = {11},  number = {3},  pages = {279--296},  author = {Stephen Birch and Amiram Gafni},  title = {{Cost effectiveness/utility analyses}},  journal = {Journal of Health Economics},  }