Accessing Noun-Phrase Antecedents offers a radical shift in the analysis of discourse anaphora, from a purely pragmatic account to a cognitive account, in terms of processing procedures. Mira Ariel defines referring expressions as markers signalling the degree of Accessibility in memory of the antecedent. The notion of Accessibility is explicitly defined, the crucial factors being the Salience of the antecedent, and the Unity between the antecedent and the anaphor.