To cite the service as such, we suggest the following BibTeX entry:
@MISC{vo:AIASCR_Reg, year=2008, title={{AIASCR} VO Services Registry}, author={Stellar Department, Czech Acad. of Sciences}, url={http://vos2.asu.cas.cz/__system__/services/registry/info}, howpublished={{VO} resource provided by the {AIASCR} VO Services} }