Media type: E-Book Title: PHI : a logic-based tool for intelligent help systems Contributor: Paul, Gabriele [Other]; Koehler, Jana [Other] imprint: Saarbrücken: Saarländische Universitäts- und Landesbibliothek, 2011 Published in: Research Report ; 1992,52 Extent: Online-Ressource Language: English Identifier: Origination: Footnote: In: Kaiserslautern ; Saarbrücken : DFKI, 1992 Access State: Open Access