Concepts
J. Fodor, "There Are No Recognitional Concepts; Not Even Red", SOFIA Xth Conference: Concepts, Barcelona, 1997.
J. Higginbotham, "Conceptual Comnpetence", SOFIA Xth Conference: Concepts, Barcelona, 1997.
R. Stalnaker, "What Might Nonconceptual Be?", SOFIA Xth Conference: Concepts, Barcelona, 1997.
G. Bealer, "A Theory of Concepts and Concept Possession", SOFIA Xth Conference: Concepts, Barcelona, 1997.
T. Burge, "Frege on Sense and Linguistic Meaning", in D. Bell & N. Cooper (eds.), The Abnalytic Tradition, Oxford: Blackwell, 1990.
C. Pacocke, A Stady of Concepts, ch. 1 Cambridge, Mass.: MIT Press, 1992.
C. Peacocke, "Implicit Conceptions, Understanding and Rationality", SOFIA Xth Conference: Concepts, Barcelona, 1997.
S. Schiffer, "Meaning and Concepts", ms.
R. Millican, "A Common Structure for Concepts of Individuals, Stuffs and Real Kinds", Behavioral and Brain Sciences 21, 1997, pp. 1-20.

Vagueness
K. Fine, "Vagueness", Synthese 30, 1975, pp. 265-300.
T. Williamson, Vagueness, ch. 5 & 6. London: Routledge, 1994.
V. McGee & B. McLaughlin, "Distinctions without a Diference", Sothern Journal of Philosophy, sup. Vol. 33, 1995, pp. 252.
T. Williamson, Vagueness, ch. 7 & 8. London: Routledge, 1994.
J. Tappenden: "The Liar & Sorites Paradoxes: Towards a Unified Treatment", Journal of Philosophy 90, 1993, pp. 551-77.
S. Soames, Understanding Truth, ch. 7. Oxford: Oxford UP, in prensa.
V. McGee, "Kilimanjaro", ms.

Non-Conceptual Content
T. Crane, "The Nonconceptual Content of Experience" in Crane (ed.), The Content of Experience, Cambridge: Capbridge UP, 1992.
G. Evans, The Varieties of Reference, 5.2, 6.3 and 7.4.
C. Pacocke, A Stady of Concepts, ch. 3 Cambridge, Mass.: MIT Press, 1992.
J. McDowell, Mind and World, ch. 3. Harvard: Harvard UP, 1994.
S. Serivy(?), "The Determinate Content of Perceptual Experience", ms.
A. Cussins, "The Connectionist Construction of Concepts", in M. Boden (ed.), The Philosophy of Artificial Inteligence, Oxford: Oxford UP, 1990.