Schubart, C. D. “The East Asian Shore Crab Hemigrapsus Sanguineus (Brachyura: Varunidae) in the Mediterranean Sea: An Independent Human-Mediated Introduction”. Scientia Marina, vol. 67, no. 2, June 2003, pp. 195-00, doi:10.3989/scimar.2003.67n2195.