Anaphora
a problem in text comprehension
pp. 305-314
in: Robin N. Campbell, Philip T. Smith (eds), Recent advances in the psychology of language, Berlin, Springer, 1978Abstract
A charactersitic feature of text is that there are many less entities talked about than there are noun phrases referring to them. The writer may introduce a certain person or object in one sentence and refer to it, perhaps on several different occasions, in subsequent sentences.