Avellino, Opuscoli diversi 2 (Naples, 1833), pp. 85, 167, Jenkins, Gela, p. 148, Mommsen, Hist. de la monn. rom. 1 (Paris, 1865), p. 151, Sambon, Recherches, p. 28
Gabrici, RIN 1894, pp. 415-7; 1895, p. 30, Gutmann-Schwabacher, MitBayNumGes 1929, pp.101 ff., Kraay, Greek Coins and History (London, 1969), pp. 32-4, Seltmann, ZfN 1895, pp. 165-82, illus.