@inproceedings{Straccia08a, Author = {Umberto Straccia}, Booktitle = {Reasoning Web, 4th International Summer School, Tutorial Lectures}, Number = {5224}, Pages = {54--103}, Publisher = {Springer Verlag}, Series = {Lecture Notes in Computer Science}, Title = {Managing Uncertainty and Vagueness in Description Logics, Logic Programs and Description Logic Programs}, Year = {2008}}