Ewa Orlowska Ingrid Rewitzky Discrete Duality for Relation Algebras and Cylindric Algebras. 291-305 2009 RelMiCS http://dx.doi.org/10.1007/978-3-642-04639-1_20 conf/RelMiCS/2009 db/conf/RelMiCS/RelMiCS2009.html#OrlowskaR09