This service has an associated publication. If you use its data, it may be appropriate to reference 2017ApJS..232....4T (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:GPS1, year=2017, title={The Gaia-PS1-{SDSS} ({GPS1}) Proper Motion Catalog}, author={Tian, H.-J. and Gupta, P. and Sesar, B. and Rix, H.-W. and Liu, C. and Goldman, B. and Platais, I. and Kudritzki, R-P. and Waters, C.Z.}, url={http://dc.zah.uni-heidelberg.de/gps1/q/cone/info}, howpublished={{VO} resource provided by the {GAVO} Data Center} }