1. Deontic logic;Åqvist,2002
2. On a logic of induction;Batens;L&PS – Logic & Philosophy of Science,2006
3. A universal logic approach to adaptive logics;Batens;Logica Universalis,2007
4. A rich paraconsistent extension of full positive logic;Batens;Logique et Analyse,2004
5. On the transparency of defeasible logics: Equivalent premise sets, equivalence of their extensions, and maximality of the lower limit;Batens;Logique et Analyse,2009