John Peter Arendzen, Catholic Encyclopedia (1913)
“ The Egyptian Church Order is one of a chain of parallel and interdependent documents, viz. (1) the Canons of Hippolytus, (2) the "Canones per Hippolytum", (3) "The Testament of the Lord", (4) Book VIII of Apost. Constit. For some time a scholarly duel has been fought between two eminent men as to the relation between these documents. ”
