I assume, with Lapointe [Lapointe, S., 1980a, “A Theory of Grammatical Agreement”, Doctoral dissertation, University of Massachusetts, Amherst; 1980b, “The Representation of Inflectional Morphology within the Lexicon”, in Burke, V. And Pustejovsky, J., eds., “Proceedings of the Eleventh Annual Meeting of the North East Linguistic Society”, GLSA, University of Massachusetts, Amherst] and Lieber [Lieber, R., 1980, “On the Organization of the Lexicon”, MIT, Cambridge], that both derivational and inflectional morphology are "lexical", in the sense that the rules of the morphological component, and not the syntactic component, define the well-formedness of both derived and inflected items.
- Selkirk (2004), Pag. 285