Sets, Sentences, and Some Logics about Imperatives. - Jörg Hansen (Fundam. Informaticae, 2001)

Problems and results for logics about imperatives. - Jörg Hansen (J. Appl. Log., 2004)

Conflicting imperatives and dyadic deontic logic. - Jörg Hansen (J. Appl. Log., 2005)

Deontic logics for prioritized imperatives. - Jörg Hansen (Artif. Intell. Law, 2006)

Ten Philosophical Problems in Deontic Logic. - Jörg Hansen; Gabriella Pigozzi; Leendert W. N. van der Torre (Normative Multi-agent Systems, 2007)

Prioritized conditional imperatives: problems and a new proposal. - Jörg Hansen (Auton. Agents Multi Agent Syst., 2008)

Be Nice! How Simple Imperatives Simplify Imperative Logic. - Jörg Hansen (J. Philos. Log., 2014)