@INCOLLECTION{HorrocksHustadtSattlerSchmidt06, AUTHOR = {Horrocks, I. and Hustadt, U. and Sattler, U. and Schmidt, R. A.}, YEAR = {2006}, TITLE = {Computational Modal Logic}, EDITOR = {Blackburn, P. and van Benthem, J. and Wolter, F.}, BOOKTITLE = {Handbook of Modal Logic}, SERIES = {Studies in Logic and Practical Reasoning}, VOLUME = {3}, PUBLISHER = {Elsevier}, ADDRESS = {Amsterdam}, PAGES = {??--??}, ISBN = {0-444-51690-5}, NOTE = {Commissioned overview paper}, URL = {\url{http://www.cs.man.ac.uk/~schmidt/publications/HorrocksHustadtSattlerSchmidt06.html}}, }