deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 3b1e83f..7249db2 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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}  @article{WALKDEN_1991, @article{Walkden_1991,  doi = {10.1111/j.1365-3091.1991.tb01013.x},  url = {http://dx.doi.org/10.1111/j.1365-3091.1991.tb01013.x},  year = {1991}, 
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volume = {38},  number = {4},  pages = {643--670},  author = {GORDON {Gordon  M. WALKDEN Walkden  and DAVID David  O. WILLIAMS}, Williams},  title = {{The diagenesis of the late Dinantian Derbyshire-East Midland carbonate shelf central England}},  journal = {Sedimentology},  }