Following the extended word-and-paradigm (EWP) model, Anderson adopts Matthews's belief that "a representation of morphological structure in terms of morphemes (unitary, localized, continuous formatives associated with discrete portions of the meaning of a form) is only appropriate in the limiting case of a strictly agglutinating language" [...]. The EWP alternative treats "the inflectional apparatus of a language as a set of rules which operate on ordered pairs of the form {S, M}, where M is the morphosyntactic representation associated with the terminal node of a phrase marker, and S is the most specifically characterized phonological stem form associated with a given lexical entry, consistent with M. The rules in question derive a surface word by altering S in systematic ways: by affixation (the addition of prefixes, suffixes, or infixes), stem modification (ablaut, tone change, consonantal mutation, etc.), reduplication, or other formally specifiable changes conditioned by the fact that {S, M} meets a specific structural description" [...].
- Jensen & Stong-Jensen (2004), a pag.224