Vague Concepts and Sorites Paradoxes
- Article by Vlad Vieru.
- http://www.ici.ro/ici/revista/sic1998_3/art09.html

Vagueness and the Sorites Paradox
- 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.
- http://www.btinternet.com/~justin.needle/

Vagueness and Ambiguity
- A little test to help distinguish vagueness from ambiguity (from San Jose University's critical thinking pages).
- http://www.sjsu.edu/depts/itl/graphics/vague/vague.html

Where Demonstratives Meet Vagueness: Possible Languages
- 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.
- http://cogprints.soton.ac.uk/documents/disk0/00/00/02/37/cog00000237-00/199801002.html

Vagueness and Identity
- 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.
- http://www.bu.edu/wcp/Papers/Meta/MetaTorr.htm

How to Make Our Ideas Clear
- 1878 article Charles Pierce.
- http://www.peirce.org/writings/p119.html

Vagueness, Semantics, and the Language of Thought
- Article by Richard DeWitt.
- http://psyche.cs.monash.edu.au/v1/psyche-1-01-dewitt.html

Russell on Vagueness
- Online text of Russell's 1923 article.
- http://www.santafe.edu/~shalizi/Russell/vagueness/

Vagueness
- Article in the Stanford Encyclopaedia of Philosophy, by Roy Sorensen.
- http://plato.stanford.edu/entries/vagueness/