To cite the service as such, we suggest the following BibTeX entry:
@MISC{vo:ADQL_tables, year=2008, title={{VESPA} PA team server Public Tables}, author={Loic Trompet}, url={http://vespa-ae.oma.be/__system__/dc_tables/list/info}, howpublished={{VO} resource provided by the {VESPA} PA team server} }