[...] Vocabulary insertion (i.e., the assignment of phonological form to morphosyntactic features) must follow all the changes to morphological structure that lead to violations of a strict Mirror Principle.
- Halle & Marantz (2004), Pag. 434

Altough nothing hinges on this terminology in what follows, we have chosen to call the terminal elements "morphemes" both before and after Vocabulary insertion, that is, both before and after they are supplied with phonological features.
- Halle & Marantz (2004), Pag. 384