Modal Fixed-Point Logic and Changing Models.

Johan van Benthem Daisuke Ikegami Modal Fixed-Point Logic and Changing Models. 146-165 2008 conf/birthday/2008trakhtenbrot Pillars of Computer Science http://dx.doi.org/10.1007/978-3-540-78127-1_9 db/conf/birthday/trakhtenbrot2008.html#BenthemI08