Modal logic for philosophers von Garson, James W. 1943-

Conditionals and modularity in general logics von Gabbay, Dov M. 1945-

Available for University of the Philippines Diliman via SpringerLink. Click here to access

Aristotle's modal proofs Prior analytics A8-22 in predicate logic von Rini, Adriane

Available for University of the Philippines Diliman via SpringerLink. Click here to access

Gentzen calculi for modal propositional logic von Poggiolesi, Francesca. 1980-

Available for UP System via SpringerLink.

Modality metaphysics, logic, and epistemology

A new introduction to modal logic von Hughes, G. E. (George Edward) 1918-

Ontology, modality, and the fallacy of reference von Jubien, Michael

The logic of provability von Boolos, George

The nature of all being a study of Wittgenstein's modal atomism von Bradley, Raymond

Languages of possibility an essay in philosophical logic von Forbes, Graeme