=Volume=
{{Volume
|number=2543
|storemode=property
|wikidataid=Q113542704
|title=Proceedings of the 21st Conference on Scientific Services & Internet (SSI-2019)
|acronym=SSI-2019
|url=http://ceur-ws.org/Vol-2543/
|date=2020-01-27
|dblp=conf/ssi/2019
|k10plus=1693399261
|urn=urn:nbn:de:0074-1155-8
}}