References

Bibtex citation
@Misc{NLTE_MPIA,
author = {M.~Kovalev and {M.~Bergemann} and
S.~Brinkmann and {and MPIA IT-department}},
HOWPUBLISHED = {{NLTE MPIA web server, [Online]. Available:
{{http://nlte.mpia.de}}
Max Planck Institute for Astronomy,
Heidelberg.}},
year = {2018},
}