B.D. Meritt, Calendar Studies, Ἀρχ. Ἐφ., 1968, pp. 97-115 B.D. Meritt, Proceedings of the American Philosophical Society, CXV, 1971, pp. 97-124 W.K. Pritchett and O. Neugebauer, The Calendars of Athens, 1947 B.D. Meritt, Ἀρχ. Ἐφ., 1968, p.87, note 4 B.D. Meritt, Proceedings of the American Philosophical Society, CXV, 1971, p. 115 B.D. Meritt, The Athenian Year, 1961, pp. 33, 147-148, 149-150, 161-165, 208 B.D. Meritt, Ἀρχ. Ἐφ., 1968, pp. 77-91, with references T.A.P.A., XCV, 1964, pp. 236ff.