Biber, D., Conrad, S. & Reppen, R. (1998). Corpus Linguistics: investigating language structure and use. Cambridge : Cambridge University Press.

Leech, G. & Fligelstone, S. (1992) Computers and corpus analysis. In: Butler, C. (ed.) Computers and written Text. London: Blackwell.

McEnery, T. & Wilson, A. (2001). Corpus Linguistics. Edinburgh: Edinburgh University Press.

Thompson, H. S.  & McKelvie, D. (1997). Hyperlink semantics for standoff markup of read-only documents. In Proceedings of SGML Europe '97