This service has an associated publication. If you use its data, it may be appropriate to reference 2013A&A...551A..97M (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:VLBI_Lockman_web, year=2013, title={Browser interface to {VLBI} images of Lockman Hole radio sources}, author={Middelberg, E. and Deller, A. and Norris, R. and Fotopuoulou, S. and Salvato, M. and Morgan, J. and Brisken, W. and Lutz, D. and Rovilos, E.}, url={https://dc.zah.uni-heidelberg.de/emi/q/browse/info}, howpublished={{VO} resource provided by the {GAVO} Data Center} }