Wettstein on definite descriptions

I critically examine an argument, due to howard wettstein, purporting to show that sentences containing definite descriptions are semantically ambiguous between referential and attributive readings. Wettstein argues that many sentences containing nonidentifying descriptions--descriptions that apply to more than one object--cannot be given a Russellian analysis, and that the descriptions in these sentences should be understood as directly referential terms. But because Wettstein does not justify treating referential uses of nonidentifying descriptions differently than attributive uses of nonidentifying descriptions, his argument fails