@article{Elbern_2010,<br/><span class="tab"></span> title={Chemical state estimation for the middle atmosphere by four‐dimensional variational data assimilation: System configuration},<br/><span class="tab"></span> volume={115},<br/><span class="tab"></span> ISSN={0148-0227},<br/><span class="tab"></span> url={http://dx.doi.org/10.1029/2009jd011953},<br/><span class="tab"></span> DOI={10.1029/2009jd011953},<br/><span class="tab"></span> number={D6},<br/><span class="tab"></span> journal={Journal of Geophysical Research: Atmospheres},<br/><span class="tab"></span> publisher={American Geophysical Union (AGU)},<br/><span class="tab"></span> author={Elbern,<br/><span class="tab"></span> H. and Schwinger,<br/><span class="tab"></span> J. and Botchorishvili,<br/><span class="tab"></span> R.},<br/><span class="tab"></span> year={2010},<br/><span class="tab"></span> month=mar }