, 2011, Phenomenological dialectics on reason and spirit: rational discourses and spiritual inspirations, in A. Tymieniecka (ed.), Reason, spirit and the sacral in the new enlightenment, Dordrecht, Springer, pp. 185-193.
, 2007, Some phenomenological and classical corollaries on time, in , Timing and temporality in Islamic philosophy and phenomenology of life, Dordrecht, Springer, pp. 137-155.
, 2006a, Being and necessity: a phenomenological investigation of Avicenna's metaphysics and cosmology, in , Islamic philosophy and occidental phenomenology on the perennial issue of microcosm and macrocosm, Dordrecht, Springer, pp. 243-261.
, 2006b, The microcosm/macrocosm analogy: a tentative encounter between graeco-arabic philosophy and phenomenology, in , Islamic philosophy and occidental phenomenology on the perennial issue of microcosm and macrocosm, Dordrecht, Springer, pp. 3-23.
, 2006c, 'Uneasy interrogations following Levinas', Studia Phaenomenologica 6, 293-315.
, 2004a, "Ontopoiesis" and the interpretation of Plato's "khôra", in A. Tymieniecka (ed.), Imaginatio creatrix, Dordrecht, Kluwer, pp. 24-45.
, 2004b, 'On ΚΑΙ ΧΩΡΑ: situating Heidegger between the Sophist and the Timaeus', Studia Phaenomenologica 4 (1-2), 73-98.
, 2003a, Avicenna's de anima: between Aristotle and Husserl, in , The passions of the soul in the metamorphosis of becoming, Dordrecht, Springer, pp. 67-89.