Darcus 1979a: S. M. Darcus, A persons relation to φρήν in Homer, Hesiod and the Greek lyric poets, Glotta 67 1979 159-173.
Darcus 1980: S. M. Darcus, How a person relates to νόος in Homer, Hesiod and the Greel lyric poets, Glotta 58 1980 33-44.