Graf, L. (2005) Critic of Amy Gutmann – The Constructive Potential of Communitarian Values for Liberalism. Sic et Non – Zeitschrift für Philosophie und Kultur, ISSN 1431-2395.
Graf, L. (2005) Theories of Knowledge – Is a Naturalised Epistemology Bound to Leave Unanswered Some Important Epistemological Questions? Tabula Rasa – Zeitschrift für Kritisches Denken, ISSN 0947-8485, No.21 (1/2005).