LSJ
τό, Dim. of ἄτρακτος, Epic. in Arch.Pap. 7.9; pl. (written ἀτράκτεια), POxy. 1740.2 (iii/iv AD).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
τό, dim. zu ἄτρακτος, VLL.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)