deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 31cf5ec..e0f9b8f 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
...
@article{Li_2012,  doi = {10.1364/ol.37.001625}, {10.1364/ol.37.000722},  url = {http://dx.doi.org/10.1364/ol.37.001625}, {http://dx.doi.org/10.1364/ol.37.000722},  year = {2012},  month = {may}, {feb},  publisher = {The Optical Society},  volume = {37},  number = {10}, {4},  pages = {1625}, {722},  author = {Chunhui Li and G. Guangying  Guan and Z. Huang Xi Cheng  and M. Johnstone Zhihong Huang  and R. Ruikang  K. Wang}, title = {{Noncontact all-optical measurement of corneal elasticity}}, {{Quantitative elastography provided by surface acoustic waves measured by phase-sensitive optical coherence tomography}},  journal = {Optics Letters},  }