The following publications are possibly variants of this publication:
- A Brief Overview of Possibilistic LogicDidier Dubois, Jérôme Lang, Henri Prade. ecsqaru 1991: 53-57
- Epistemic Entrenchment and Possibilistic LogicDidier Dubois, Henri Prade. ai, 50(2):223-239, 1991.
- Interventions in Possibilistic LogicSalem Benferhat, Didier Dubois, Henri Prade. sum 2009: 40-54 [doi]
- Timed possibilistic logicDidier Dubois, Jérôme Lang, Henri Prade. FUIN, 15(3-4):211-234, 1991.