This service has an associated publication. If you use its data, it may be appropriate to reference 2018AJ....156...58B (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.
To cite the service as such, we suggest the following BibTeX entry:
@MISC{vo:gdr2dist_scs, year=2018, title={Estimated distances to 1.33 billion stars in Gaia DR2}, author={Bailer-Jones, C.A.L. and Rybizki, J. and Fouesneau, M. and Mantelet, G. and Andrae, R.}, url={https://dc.zah.uni-heidelberg.de/gdr2dist/q/cone/info}, howpublished={{VO} resource provided by the {GAVO} Data Center} }