=Volume=
{{Volume
|number=2839
|storemode=property
|wikidataid=Q113542254
|title=Proceedings of the 13th European Workshop on Services and their Composition (ZEUS 2021)
|acronym=ZEUS 2021
|url=http://ceur-ws.org/Vol-2839/
|date=2021-03-26
|dblp=conf/zeus/2021
|k10plus=1759408328
|urn=urn:nbn:de:0074-1155-8
}}