To cite the service as such, we suggest the following BibTeX entry:
@MISC{vo:eistudhbupta, year=2017, title={{HELP} Best Spectra Datalink Service}, author={Yannick Roehlly}, url={https://herschel-vos.phys.sussex.ac.uk/bestseds/q/sdl/info}, howpublished={{VO} resource provided by the The Virtual Observatory at susseX ({VOX})} }