1. Lecture Notes in Computer Science;M. Keeler,2003
2. Keeler, M.: The Philosophical Context of Peirce’s Existential Graphs. Cognito, Centro de Estudos do Pragmatismo Filosofia (2005) (forthcoming)
3. Lecture Notes in Computer Science;M. Keeler,1997
4. Keeler, M., Kloesel, C.: Communication, Semiotic Continuity, and the Margins of the Peircean Text. In: Greetham, D. (ed.) Margins of the Text. University of Michigan Press, Ann Arbor (1997)
5. Peirce, C.S.: Writings of Charles S. Peirce: A Chronological Edition. Six volumes. In: Christian, J.W., Kloesel, et al. (eds.). Indiana University Press, Bloomington (1982-1997) (see the Peirce Edition Project:
http://www.iupui.edu/~peirce
)