To cite the service as such, we suggest the following BibTeX entry:
@MISC{vo:VOTT, year=2016, title={{VOTT}: VO Text Treasures}, author={Demleitner, M.}, url={https://dc.zah.uni-heidelberg.de/vott/q/list/info}, howpublished={{VO} resource provided by the {GAVO} Data Center} }