, 1974, Absolute space and absolute motion in Kant's critical philosophy, in L. White Beck (ed.), Kant's theory of knowledge, Dordrecht, Springer, pp. 95-110.
, 1972a, Absolute space and absolute motion in Kant's critical philosophy, in L. White Beck (ed.), Proceedings of the Third international Kant congress, Dordrecht, Springer, pp. 172-187.