I'm interested in the grammatical variation that is found between prose writers in what is putatively a single dialect of Greek, Attic. Such variation exists on various levels:
- Phonology: e.g., some writers write -ττ-, others -σσ-; Thucydides writes ξύν where most writers prefer σύν.
- Morphology: e.g., desideratives in -σέω are fairly productive in Thucydides, but not in most other writers.
- Morphosyntax: e.g., Xenophon has purpose clauses with ὅπως + fut. ind., where other writers tend to use the subjunctive.
I want to identify such distinguishing features for the major Attic prose writers. I assume this has been done for different authors to different extents. Where would I find such information about specific writers (presumably some commentaries might discuss this, but which ones?), or even better, a comparative study?