To cite the service as such, we suggest the following BibTeX entry:
@MISC{vo:Depth_maps, year=2018, title={{HELP} depth maps}, author={Shirley, R.; Roehlly, Y.; et al}, url={https://herschel-vos.phys.sussex.ac.uk/depth/q/depth/info}, howpublished={{VO} resource provided by the The Virtual Observatory at susseX ({VOX})} }