I am intrigued by this dynamic between prose and verse you set up. Allusion or intertextuality is certainly a feature of prose, is it not?

I do think Hinds book is fundamental, although I am (predictably) not to pleased how he devalues parody. Lowell Edmunds' intertexuality book is better on that score - he devotes four whole pages to parody. Still, Edmunds' book is well worth looking at if you haven't already read it, when you come back to the question.