deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 81cb0e5..135f55c 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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year = {1986},  publisher = {Butterworth-Heinemann},  }  @article{Xu_2006,  doi = {10.1063/1.2195024},  url = {http://dx.doi.org/10.1063/1.2195024},  year = {2006},  publisher = {{AIP} Publishing},  volume = {77},  number = {4},  pages = {041101},  author = {Minghua Xu and Lihong V. Wang},  title = {{Photoacoustic imaging in biomedicine}},  journal = {Rev. Sci. Instrum.},  }