deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index ad35dc3..3988cfc 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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title = {{Bat algorithm: a novel approach for global engineering optimization}},  journal = {Engineering Computations},  }  @article{Yang_2010,  doi = {10.1504/ijbic.2010.032124},  url = {http://dx.doi.org/10.1504/ijbic.2010.032124},  year = {2010},  publisher = {Inderscience Publishers},  volume = {2},  number = {2},  pages = {78},  author = {X.-S. Yang},  title = {{Firefly algorithm stochastic test functions and design optimisation}},  journal = {{International Journal of Bio-inspired Computation}},  }