deletions | additions       diff --git a/bibliography/references.bib b/bibliography/references.bib  index 58f3939..9eafc53 100644  --- a/bibliography/references.bib  +++ b/bibliography/references.bib 
...
journal = {J. Geophys. Res.},  }  @article{Tomikawa_2009,  doi = {10.2151/sola.2009-036},  url = {http://dx.doi.org/10.2151/sola.2009-036}, 
...
title = {{Characteristics of Tropopause and Tropopause Inversion Layer in the Polar Region}},  journal = {{SOLA}},  }  @article{WMO1957,  year = {1957},  publisher = {World Meteorological Organization},  volume = {4},  pages = {134--138},  author = {World Meteorological Organization},  title = {Meteorology A Three-Dimensional Science},  journal = {Geneva, Second Session of the Commission for Aerology},  }