Daum, MiriamMiriamDaumArnold, YvonneYvonneArnoldLeimeister, Jan MarcoJan MarcoLeimeisterKrcmar, HelmutHelmutKrcmarKrcmar, Helmut2023-04-132023-04-132005https://www.alexandria.unisg.ch/handle/20.500.14171/85342deVirtuelle CommunitiesCCCbook section