1. Found in many places, including the Loeb Classical Library.
2. Ted Hughes, Seneca's Oedipus, Doubleday and Company, Garden City, NY: 1972.
3. Poetics 1456a29ff. See R.J. Tarrant, "Senecan Drama and its Antecedents," Harvard Studies in Classical Philology 82 (1978), 221-8.
4. T.G. Rosenmeyer, "Seneca's Oedipus and Performance: The Manto Scene," in Ruth Scodel, ed., Theater and Society in the Classical World, University of Michigan Press: 1993, 235-44, makes a similar suggestion. This is met with some skepticism in John R. Porter's review in Phoenix 50:1 (Spring 1996), 80.