, 2011, 'The medium: S. T. Coleridge's concept of the human person', Glimpse 13, 1-7.
with Spitzer, M. , 1992, Phenomenology and psychiatry, in M. Spitzer, M. A. Schwartz & M. A. Schwartz (eds.), Phenomenology, language & schizophrenia, Dordrecht, Springer, pp. 35-45.
, 1992a, Eidos and eidetic variation in Husserl's phenomenology, in M. Spitzer, M. A. Schwartz & M. A. Schwartz (eds.), Phenomenology, language & schizophrenia, Dordrecht, Springer, pp. 88-102.
, 1992b, Phenomenology: intentionality, passive synthesis, and primary consciousness of time, in M. Spitzer, M. A. Schwartz & M. A. Schwartz (eds.), Phenomenology, language & schizophrenia, Dordrecht, Springer, pp. 70-87.
with Spitzer, M. , Maher, B. A. , 1990, Synopsis and critical remarks, in M. Spitzer & B. A. Maher (eds.), Philosophy and psychopathology, Dordrecht, Springer, pp. 223-239.
with Spitzer, M. , Oepen, G. , 1988, Psychopathologie und Philosophie: Synopsis und Ausblick, in M. Spitzer (Hrsg.), Psychopathology and philosophy, Berlin, Springer, pp. 237-252.
, 1988a, Bewußtsein und Selbstbewußtsein, in M. Spitzer (Hrsg.), Psychopathology and philosophy, Berlin, Springer, pp. 145-155.