LSJ
Adv. of δισχιδής, in double columns, of writing, Sch. D.T. p. 191 H., al. (wrongly expld. as = στιχηδόν).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
adv. zu δισχιδής, B.A. 1171.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)