References
Hans Siegfried
(1989). Self-presentation. In E. F. Kaelin & C. Schrag (eds.) American phenomenology (pp. 282-287). Dordrecht: Kluwer.
(1983). Contribution to the debate: Professor Wallulis on theory and emancipation. In A. Tymieniecka & C. Schrag (eds.) Foundations of morality, human rights, and the human sciences (pp. 275-280). Dordrecht: Reidel.