Refined Epistemic Entrenchment. - Thomas Andreas Meyer; Willem Adrian Labuschagne; Johannes Heidema (J. Log. Lang. Inf., 2000)

Infobase Change: A First Approximation. - Thomas Andreas Meyer; Willem Adrian Labuschagne; Johannes Heidema (J. Log. Lang. Inf., 2000)

Systematic Withdrawal. - Thomas Andreas Meyer; Johannes Heidema; Willem Adrian Labuschagne; Louise Leenen (J. Philos. Log., 2002)

Automated Support for Enterprise Information Systems. - John A. van der Poll; Paula Kotzé; Willem Adrian Labuschagne (J. Univers. Comput. Sci., 2004)

My beliefs about your beliefs: a case study in theory of mind and epistemic logic. - Hans van Ditmarsch; Willem Adrian Labuschagne (Synth., 2007)

Semantics for Dual Preferential Entailment. - Katarina Britz; Johannes Heidema; Willem Adrian Labuschagne (J. Philos. Log., 2009)

Supraclassical Consequence Relations - Tolerating Rare Counterexamples. - Willem Adrian Labuschagne; Johannes Heidema; Katarina Britz (Australasian Conference on Artificial Intelligence, 2013)