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John McCarthy: Situation Calculus with Concurrent Events and Narrative
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Fangzhen Lin, Ray Reiter: State Constraints Revisited, Journal of Logic and Computation. Special Issue on Actions and Processes. 1994.
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Murray Shanahan: Default reasoning about spatial occcupancy, Artificial Intelligence 74 (1995), 147-163
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Ray Reiter: A Logic for Default Reasoning, Artificial Intelligence 13 (1980), 81-132.
McCarthy, Buvac: Formalizing Context (Expanded Notes)
Sasa Buvac: Quantificational Logic of Context