deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index ca473cc..eebb1aa 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
...
title = {{A posteriori calculation of $\updelta$$\less$sup$\greater$18$\less$/sup$\greater$O and $\updelta$D in atmospheric water vapour from ground-based near-infrared {FTIR} retrievals of H$\less$sub$\greater$2$\less$/sub$\greater$$\less$sup$\greater$16$\less$/sup$\greater$O H$\less$sub$\greater$2$\less$/sub$\greater$$\less$sup$\greater$18$\less$/sup$\greater$O, and {HD}$\less$sup$\greater$16$\less$/sup$\greater$O}},  journal = {Atmos. Meas. Tech.},  }  @article{Herman_2014,  doi = {10.5194/amt-7-3127-2014},  url = {http://dx.doi.org/10.5194/amt-7-3127-2014},  year = {2014},  publisher = {Copernicus {GmbH}},  volume = {7},  number = {9},  pages = {3127--3138},  author = {R. L. Herman and J. E. Cherry and J. Young and J. M. Welker and D. Noone and S. S. Kulawik and J. Worden},  title = {{Aircraft validation of Aura Tropospheric Emission Spectrometer retrievals of {HDO} / H$\less$sub$\greater$2$\less$/sub$\greater$O}},  journal = {Atmos. Meas. Tech.},  }