Parsons, Alexandrian Library, pp. 110, 204–205. See also El-Abbadi, Life and Fate, pp. 95, 100; and Tzetzes, a 12th-century scholar whose Prolegomena to Aristophanes, also known as Scholium Plautinum, may be found in R. Pfeiffer, History of Classical Scholarship (Oxford: Clarendon, 1968), p. 101.