Reference
A.F. Lop (1989): On the morphological variation of two circum-mediterranean brackish-water gammarids, Rhipidogammarus rhipidophorus (Catta) and Echinogammarus foxi (Schellemberg), from the spanish inland waters (Crustacea, Amphipoda) – Spixiana, Zeitschrift für Zoologie – 012: 115 - 124.