It would be the equivalent to "this one" in English, or in this case, "this autor". I'm pretty sure you meant Éste, with É. You can do some research about the difference between este, éste and esté

Hola Irene! Se refiere al autor y la palabra es utilizada como un pronombre. (A pronoun) Several years ago I read an essay that I can't remember which English author recounted (or where he recounted....) the difficulties presented to him to get rid of a package of books that by no means wanted to keep in his library. Hope I have been useful:)

Este se refiere al autor, quiere decir en el que el contaba...