deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 0675a23..3fb61b9 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
...
adsurl = {http://adsabs.harvard.edu/abs/1994IBVS.4075....1R},  adsnote = {Provided by the SAO/NASA Astrophysics Data System},  }  @article{Osborne_1988,  doi = {10.1086/185157},  url = {http://dx.doi.org/10.1086/185157},  year = {1988},  month = {may},  publisher = {{IOP} Publishing},  volume = {328},  pages = {L45},  author = {J. P. Osborne and P. Giommi and L. Angelini and G. Tagliaferri and L. Stella},  title = {{The discovery of the 2 hour modulated X-ray source {EXO} 033319-2554.2 an {AM} Herculis system}},  journal = {{ApJ}},  }