, 1991, The phenomenology of Edmund Husserl and the natural sciences —juxtaposition or cooperation?, in A. Tymieniecka (ed.), The turning points of the new phenomenological era, Dordrecht, Kluwer, pp. 139-149.
, 1989, Delineation and analysis of objectivities (Gegenständlichkeiten) in Edmund Husserl's phenomenology: (based on "Logical investigations," volume II), in A. Tymieniecka (ed.), Man within his life-world, Dordrecht, Springer, pp. 91-144.
, 1975a, 'The problem of the cognitive subject as viewed by Husserl and Ingarden', Dialectics and Humanism 2 (3), 17-31.
, 1975b, 'The problem of the cognitive subject as viewed by Husserl and Ingarden', Dialectics and Humanism 2 (3), 17-31.