Michel ter Hark

(2009)., Popper's theory of the searchlight: a historical assessment of its significance, in Z. Parusniková & R. S. Cohen (eds.), Rethinking Popper, Dordrecht, Springer, pp. 175-184.

(2000). Uncertainty, vagueness and psychological indeterminacy. Synthese 124 (2), pp. 193-220.

(1991). The development of Wittgenstein's views about the other minds problem. Synthese 87 (2), pp. 227-253.

(1990). Wittgenstein's metaphysics of the inner and the outer. Daimon Revista Internacional de Filosofia 2, pp. 139-150.