1. Domingo, Willis. 1981a. “Being True to Heidegger. Letter with Reply by Thomas Sheehan.” The New York Review of Books, April 2, 1981. http://www.nybooks.com/articles/7065.
2. Domingo, Willis. 1981b. “The Heidegger Question. Letter with Response by Thomas Sheehan.” The New York Review of Books, June 11, 1981. http://www.nybooks.com/articles/6975.