@incollection{vBPa06:etl,
	Author = {Johan van Benthem and Eric Pacuit},
	Booktitle = {Proceedings of Advances in Modal Logic 2006},
	Date-Added = {2006-06-23 11:21:36 -0400},
	Date-Modified = {2007-09-17 22:03:36 -0700},
	Editor = {Guido Governatori and  Ian Hodkinson and Yde Venema},
	Publisher = {King's College Press},
	Title = {The Tree of Knowledge in Action: Towards a Common Perspective},
	Year = {2006}}