De Smet, W. H. (1998). Cephalodella segersi n. sp. (Notommatidae, Monogononta), a new rotifer from Belgium, with notes on C. catellina (O.F. Müller, 1786), C. fluviatilis (Zavadovsky, 1926) and C. maior Zavadovsky, 1926 stat. nov. Hydrobiologia, 367, 1-13