Article by Richard DeWitt.

Article in the Stanford Encyclopaedia of Philosophy, by Roy Sorensen.

Online text of Russell's 1923 article.

1878 article Charles Pierce.

Article by Loretta Torrago presented at the 20th World Congress of Philosophy. Makes the surprising argument that vagueness in identity statements is incompatible with vagueness of constitution.

Article by Adam Morton, which appeared in Proc. Aristotelian Society. Argues that vagueness and demonstratives are connected, by means of constructing artificial languages in which the relationships are manufactured.

Site maintained by Justin Needle. Extensive links, and excerpts from his PhD thesis `Ruling Out the Sorites: Vagueness, Rules, Wittgenstein'.

A little test to help distinguish vagueness from ambiguity (from San Jose University's critical thinking pages).

A resource for philosophers and other researchers, including a bibliography on vagueness, plus lists of online articles, homepages of people working in the area and related external resources.

Article by Vlad Vieru.