Describes the syntax of regular expressions in Perl.

Pattern matching and regular expressions.

A tutorial for regular expressions in Perl.

Perl regular expressions quick start; Covers the very basics of understanding, creating and using regular expressions

Archive of discussion relating to regular expressions in Perl 6.

A discussion of the complexity of regular expression matching algorithms in Perl.

An introduction covering basic concepts.

A quick introduction to Perl regular expressions for those who have some programming experience.

An article about how to use regular expressions in Perl by M-J Dominus.

Notes and slides from a two part talk that, in its first part, details the algorithm that perl uses internally to do regex matching and, in its second part, discusses practical parsing applications and RegEx optimization