Belfiore C., 1982: The nymphs of Italian species of the Ecdyonurus lateralis group, with a description of the nymph of E. gridellii (Grandi, 1953). 7 pp. Fragmenta entomologica 16(2): 125-131.
 
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Burmeister E. G., 1989: Wiederfunde von Ephoron virgo (Olivier, 1791) Ephemera lineata Eaton, 1870 und Oligoneuriella rhenana (Imhoff, 1852) (Insecta, Ephemeroptera). 9 pp. Spixiana 11(2): 177-185.