Media type: E-Article Title: Reasoning Web: Managing Uncertainty and Vagueness in Description Logics, Logic Programs and Description Logic Programs Contributor: Straccia, Umberto Published: Springer Berlin Heidelberg, 2008 Published in: Reasoning Web (2008), Seite 54-103 Language: Not determined DOI: 10.1007/978-3-540-85658-0_2 ISSN: 0302-9743; 1611-3349 Origination: Footnote: