G. Abbate, B. Thijsse, und C. Kleijn. International Conference on Computational Science (1), Volume 4487 von Lecture Notes in Computer Science, Seite 842-849. Springer, (2007)
W. van der Hoek, J. Jaspars, und E. Thijsse. Logic, Epistemology, and the Unity of Science, Volume 1 von Logic, Epistemology, and the Unity of Science, Springer, (2004)