Hayward, Peter Joseph (1985) (på engelska). Ctenostome bryozoans: keys and notes for the identification of the species. Synopses of the British fauna, 0082-1101 ; N.S., 33. London: Published for the Linnean Society of London and The Estuarine and Brackish-Water Sciences Association by E.J. Brill and W. Backhuys. Libris8346948. ISBN 90-04-07583-6