deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 3ad832a..f8ab471 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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author = {R. Costanza and R. d'Arge and R. de Groot and S. Farber and M. Grasso and B. Hannon and K. Limburg and S. Naeem and R. O'Neil and J. Paruelo and R. Raskin and P. Sutton and M. van den Belt},  title = {{The value of the world's ecosystem services and natural capital}},  journal = {Nature},  }  @article{Harborne_2006,  doi = {http://doi:10.1016/S0065-2881(05)50002-6},  url = {http://www.sciencedirect.com/science/article/pii/S0065288105500026},  year = {2006},  volume = {50},  pages = {57-189},  author = {A. Harborne and P. Mumby and F. Micheli and C. Perry and C. Dahlgren and K. Holmes and D. Brumbaugh},  title = {{The functional value of Caribbean coral reef, seagrass, and mangrove habitats to ecosystem processes}},  journal = {Advances in Marine Biology},  }