To cite the service as such, we suggest the following BibTeX entry:
@MISC{vo:eiueilewpset, year=2007, title={{VESPA} PA team server}, author={Loic Trompet}, url={http://vespa-ae.oma.be/__system__/services/root/info}, howpublished={{VO} resource provided by the {VESPA} PA team server} }