^ a b Nilsson (1967), Vol I , pp. 668-670 ^ Scholia ad. Euripides Phoen. 487 ^ Pausanias 9.25.5 ^ a b Diodorus Siculus (v.4.7) :"At Thebes or Delos the festival occurred two months earlier, so any seed-sowing connection was not intrinsic." ^ For Mantinea, see Brill's New Pauly "Persephone", II D.