In my search for the many functions the Greek particles have, I found this Google book (look for page 187):
On of the footnotes you’ll see a reference to an Apollonius Dyscolus, supposedly one of the great Greek grammarians. Here’s a website dedicated to him. http://schmidhauser.us/apollonius/works/index.php My Greek is not that advanced to be able to read his works, but someone might find it useful.
Vale!