Herodotus vii. 151; Diodorus Siculus xii. 4; Demosthenes, De Falsa Legatione, p. 428; Grote recognizes the treaty as a historical fact, History of Greece, ch. xlv, while Curtius, bk. iii. ch. ii, denies the conclusion of any formal treaty; see also Ed. Meyer, Forschungen., ii.; JB Bury in Hermathena, xxiv (1898).