Relevant deontic logic. - Werner Stelzner (J. Philos. Log., 1992)

Psychologism, Universality and the Use of Logic. - Werner Stelzner (Nature's Principles, 2005)

A Guide to Ivan Orlov's "The calculus of the compatibility of propositions". - David Makinson; Werner Stelzner (Australas. J. Log., 2024)

The Calculus of the Compatibility of Propositions. - Ivan Orlov; Werner Stelzner (Australas. J. Log., 2024)