id: 50159526 dt: j an: 50159526 au: Sacchetti, Lorenzo ti: The fixed point property in modal logic so: Notre Dame Journal of Formal Logic 42, No. 2, 65-86 (2001). py: 2001 pu: la: EN cc: ut: ci: li: http://projecteuclid.org/euclid.ndjfl/1054837934