Media type: E-Article Title: Lecture Notes in Computer Science: Uncertainty Management in Logic Programming: Simple and Effective Top-Down Query Answering Contributor: Straccia, Umberto Published: Springer Berlin Heidelberg, 2005 Published in: Lecture Notes in Computer Science (2005), Seite 753-760 Language: Not determined DOI: 10.1007/11552451_103 ISSN: 0302-9743; 1611-3349 Origination: Footnote: